\documentclass[a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{filecontents}
\begin{filecontents}{bibliography.bib}
@article{greenwade93,
    author  = "George D. Greenwade",
    title   = "The {C}omprehensive {T}ex {A}rchive {N}etwork ({CTAN})",
    year    = "1993",
    journal = "TUGBoat",
    volume  = "14",
    number  = "3",
    pages   = "342--351"
}
@book{goossens93,
    author    = "Michel Goossens and Frank Mittelbach and Alexander Samarin",
    title     = "The LaTeX Companion",
    year      = "1993",
    publisher = "Addison-Wesley",
    address   = "Reading, Massachusetts"
}
\end{filecontents}
\usepackage[style=apa,backend=biber]{biblatex}
\addbibresource{bibliography.bib}
\begin{document}

\textcite{greenwade93} is the best article on \LaTeX \parencite{goossens93}.

\printbibliography

\end{document}

