Cita APA (7th ed.)

Leahey, T. H. (1987). A history of psychology: Main currents in psychological thought (2nd ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Leahey, Thomas Hardy. A History of Psychology: Main Currents in Psychological Thought. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1987.

Cita MLA (9th ed.)

Leahey, Thomas Hardy. A History of Psychology: Main Currents in Psychological Thought. 2nd ed. Prentice-Hall, 1987.