====== Table 6.1 Basic Citation Styles ====== ^Type of citation^First citation in text [and]^Subsequent citations in text^Parenthetical format, first citation in text [&]^Parenthetical format, subsequent citations in text^ |One work by one author|Author (date)|Author (date)|(Author, date)|(Author, date)| |One work by two authors|Author1 and Author2 (date)|Author1 and Author2 (date)|(Author1 & Author2, date)|(Author1 & Author2, date)| |One work by three authors|Author1, Author2, and Author3 (date)|Author1 et al. (date)|(Author1 & Author2, & Author3, date)|(Author1 et al., date)| |One work by four authors|Author1, Author2, Author3, and Author4 (date)|Author1 et al. (date)|(Author1, Author2, Author3, & Author4, date)|(Author1 et al., date)| |One work by five authors|Author1, Author2, Author3, Author4 and Author5|Author1 et al. (date)|(Author1, Author2, Author3, Author4 & Author5, date)|(Author1 et al., date)| |One work by six or more authors|Author1 et al. (date)|Author1 et al. (date)|(Author1 et al., date)|(Author1 et al., date)| |Groups (readily identified through abbrevation) as authors|National Institute of Mental Health (NIMH, date)|NIMH (date)|(National Institute of Mental Health [NIMH], date)|(NIMH, date)| |Groups (no abbreviation) as authors|University of Missouri (date)|Univerity of Missouri (date)|(Univerity of Missouri, date)|(University of Missouri, date)|