↑ https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_formatting_and_style_guide/in_text_citations_author_authors.html ↑ https://gocolumbia.libguides.com/c.php?g=338877&p=2282144 ↑ https://libguides.sgul.ac.uk/Harvard/et_al About This Article Co-authored by: Michelle...