Cita APA (7th ed.)

Sellin, D. F. (1979). Mental retardation: Nature, needs, and advocacy. Allyn and Bacon.

Cita Chicago (17th ed.)

Sellin, Donald F. Mental Retardation: Nature, Needs, and Advocacy. Boston: Allyn and Bacon, 1979.

Cita MLA (9th ed.)

Sellin, Donald F. Mental Retardation: Nature, Needs, and Advocacy. Allyn and Bacon, 1979.