Cita APA (7a ed.)

Harmon, F. L. (1955). Principles of psychology (Rev. ed.). Bruce.

Cita Chicago Style (17a ed.)

Harmon, Francis L. Principles of Psychology. Rev. ed. Milwaukee: Bruce, 1955.

Cita MLA (9a ed.)

Harmon, Francis L. Principles of Psychology. Rev. ed. Bruce, 1955.