APA style is widely used in the social sciences. Citations are created using both a detailed reference list appearing at the end of a paper and brief in-text citations that direct readers to particular sources from that reference list.
Gold (2012) notes that Edmonia Lewis created her Cleopatra sculpture for Centennial celebrations (p. 318).
Edmonia Lewis carved the Cleopatra sculpture for the Centennial (Gold, 2012, p. 318).
Morris (2014) argues that the great abolitionist schism of 1840 was less extreme in the west (p. 6).
Even as eastern abolitionist groups split in 1840, western abolitionists tended to remain affiliated with multiple organizations (Morris, 2014, p. 6).
An APA reference list includes the author name, publication date, title, and publication information. All elements should be separated with a period.
Gold, S. W. (2012). The death of Cleopatra/The birth of freedom: Edmonia Lewis at the new world's fair. Biography: An Interdisciplinary Quarterly, 35(2), 318. doi: 10.1353/bio.2012.0014