https://tex.stackexchange.com/q/589166/35864

initialtest.tex

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\usepackage[backend=biber, style=apa]{biblatex}

\begin{filecontents}{\jobname.bib}
@article{felder1988learning,
    title        = {Learning and teaching styles in engineering education},
    author       = {Felder, Richard M and Silverman, Linda K},
    year         = 1988,
    journal      = {Engineering education},
    publisher    = {North Carolina},
    volume       = 78,
    number       = 7,
    pages        = {674--681}
}
@online{soloman2005index,
    title        = {Index of learning styles questionnaire},
    author       = {Soloman, Barbara A and Felder, Richard M},
    year         = 2005,
    organization = {NC State University},
    url          = {https://www.engr.ncsu.edu/stem-resources/legacy-site/learning-styles/},
    urldate      = {2021-02-14},
}
\end{filecontents}
\addbibresource{\jobname.bib}

\begin{document}
Lorem \autocite{felder1988learning}

ipsum \autocite{soloman2005index}

\printbibliography
\end{document}