Herbert, M. (1993). Psychology for social workers. Macmillan.
Chicago Style (17th ed.) ZitazioaHerbert, Martin. Psychology for Social Workers. London: Macmillan, 1993.
MLA (9th ed.) ZitazioaHerbert, Martin. Psychology for Social Workers. Macmillan, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.