Gaya APA

Degler, C, N. (1991). In search of human nature: the decline and revival of Darwinism in American social thought. . New York dsl: Oxford UP.

Gaya MLA

Degler, Carl, N.. "In search of human nature: the decline and revival of Darwinism in American social thought. ". New York dsl: Oxford UP, 1991. Buku.