Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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