Referencing

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% \usepackage[
% % backend = bibtex,
% % backend = bibtex8,
% backend = biber,
% style = apa,
% citestyle = authoryear,
% url = false,
% doi = false,
% eprint = false,
% natbib = true,
% ]{biblatex}
%
% % % \iftrue
% % \iffalse
% % \usepackage{filecontents}
% % \begin{filecontents*}{\jobname.bib}
% %
% % \end{filecontents*}
% % \fi
% \addbibresource{\jobname.bib}
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% https://tex.stackexchange.com/questions/379901/biblatex-how-to-match-the-journal-of-finance-bibliographic-style
\usepackage[
% backend = bibtex,
% backend = bibtex8,
backend = biber,
style = authoryear,
% style = apa,
giveninits = false,
uniquelist = false,
uniquename = init,
isbn = false,
maxcitenames = 3,
dashed = false,
maxbibnames = 999,
citestyle = authoryear,
% url = false,
doi = false,
eprint = false,
natbib = true,
]{biblatex}
%
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% https://tex.stackexchange.com/questions/134063/how-to-add-a-comma-between-author-and-year
% \renewcommand*{\nameyeardelim}{\addcomma\space}

\newcommand{\citeauthoryear}[1]{\citeauthor{#1}~(\citeyear{#1})}

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\AtEveryBibitem{\clearlist{language}} % https://tex.stackexchange.com/questions/401020/how-to-remove-the-language-information-in-a-bibliography
\addbibresource{\jobname.bib}

\DeclareDelimFormat{nameyeardelim}{\addcomma\space}

% \DeclareNameAlias{sortname}{family-given}
\DeclareNameAlias{sortname}{family-given/given-family}

% \renewcommand*{\labelnamepunct}{\addspace}
\renewcommand*{\labelnamepunct}{\addcomma\space}

\DeclareFieldFormat
[article,inbook,incollection,inproceedings,patent,thesis,unpublished]
{title}{#1}

% \DeclareFieldFormat{titlecase}{\MakeSentenceCase*{#1}}

\renewbibmacro*{in:}{%
\ifentrytype{article}
{\setunit{\addcomma\space}}
{\printtext{\bibstring{in}\intitlepunct}}}

\DeclareFieldFormat{journaltitlecase}{#1}

\renewbibmacro*{journal}{%
\ifboolexpr{
test {\iffieldundef{journaltitle}}
and
test {\iffieldundef{journalsubtitle}}
}
{}
{\printtext[journaltitle]{%
\printfield[journaltitlecase]{journaltitle}%
\setunit{\subtitlepunct}%
\printfield[journaltitlecase]{journalsubtitle}}}}

\renewbibmacro*{volume+number+eid}{%
% \setunit*{\addcomma\space}%
\printfield{volume}%
\printfield{number}%
\setunit*{\addcomma\space}%
\printfield{eid}
}

% \DeclareFieldFormat[article,periodical]{volume}{\mkbibbold{#1}}% volume of a journal

% \DeclareFieldFormat[article]{volume}{\mkbibemph{#1}}

\DeclareFieldFormat[article]{number}{(#1)}

\DeclareFieldFormat{pages}{#1}

% https://tex.stackexchange.com/questions/12254/biblatex-how-to-remove-the-parentheses-around-the-year-in-authoryear-style/
% \renewcommand{\bibopenparen}{\addcomma\addspace}
% \renewcommand{\bibcloseparen}{\addcomma\addspace}

% https://tex.stackexchange.com/questions/152869/show-url-only-for-one-reference
\renewbibmacro*{url+urldate}{%
\ifentrytype{misc}
{\printfield{url}%
\iffieldundef{urlyear}
{}
{\setunit*{\addspace}%
\printurldate}}
{}}

% https://tex.stackexchange.com/questions/19105/how-can-i-put-more-space-between-bibliography-entries-biblatex
\setlength\bibitemsep{1.5\itemsep}
% https://tex.stackexchange.com/questions/459022/remove-parentheses-at-year-biblatex-with-author-year/459026
% \renewbibmacro*{date+extrayear}{%
% \usebibmacro{date+extradate}
% }
%
%%% authoryear.bbx
\renewbibmacro*{date+extradate}{%
\iffieldundef{labelyear}
{}
{\addcomma\addspace{%
\iflabeldateisdate
{\printfield{issue}%
\setunit*{\addspace}%
\printdateextra}
{\printlabeldateextra}}\addcomma\addspace}}%
\renewbibmacro*{bbx:ifmergeddate}{\iflabeldateisdate}%
\renewbibmacro*{issue+date}{%
\usebibmacro{bbx:ifmergeddate}
{}
{\addcomma\addspace{%
\printfield{issue}%
\setunit*{\addspace}%
\printdate}\addcomma\addspace}}

% \newcommand{\citebracket}[1]{\parencite{#1}}

% \newcommand{\citebracket}[1]{(\cite{#1})}