APA (7e ed.) Bronvermelding

Warren, H. C. (1930). Elements of human psychology (Rev. and enl. ed.). Houghton Mifflin Co.

Chicago (17e ed.) Bronvermelding

Warren, Howard Crosby. Elements of Human Psychology. Rev. and enl. ed. Boston: Houghton Mifflin Co, 1930.

MLA (9e ed.) Bronvermelding

Warren, Howard Crosby. Elements of Human Psychology. Rev. and enl. ed. Houghton Mifflin Co, 1930.