Cita APA (7th ed.)

Epstein, W., & Shontz, F. C. (1971). Psychology in progress. Holt.

Cita Chicago (17th ed.)

Epstein, William, i Franklin C. Shontz. Psychology in Progress. New York: Holt, 1971.

Cita MLA (9th ed.)

Epstein, William, i Franklin C. Shontz. Psychology in Progress. Holt, 1971.