APA in-text citation style uses the author's last name and the year of publication.
One Author: (Miller, 2019)
Two Authors: (Miller & Adams, 2016)
Three or more: (Smith et al., 2018)
No Author-List the Title of the Book or Article in quotes
("Herbs at a Glance," 2017)
Corporate Author
(National Institute of Mental Health [NIMH], 2018)
No Date - Use n.d. (for no date)
(Smithers, n.d.)
Multiple Sources
When paraphrasing from multiple sources, include all author names in parentheses in alphabetical order; e.g. (Collins, 2018; Merrion & Rogers, 2019; Williams, 2013).