Herbert, M. (1993). Psychology for social workers. Macmillan.
Cita Chicago (17th ed.)Herbert, Martin. Psychology for Social Workers. London: Macmillan, 1993.
Cita MLA (9th ed.)Herbert, Martin. Psychology for Social Workers. Macmillan, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.