Brown, R., & Herrnstein, R. J. (1975). Psychology. Little, Brown.
Cita Chicago (17th ed.)Brown, Roger, i Richard J. Herrnstein. Psychology. Boston: Little, Brown, 1975.
Cita MLA (9th ed.)Brown, Roger, i Richard J. Herrnstein. Psychology. Little, Brown, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.