APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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