Cita APA (7a ed.)

Beirnes-Smith, M., Ittenbach, R., & Patton, J. R. (2002). Mental retardation (6th ed.). Merrill/Prentice Hall.

Cita Chicago Style (17a ed.)

Beirnes-Smith, Mary, Richard Ittenbach, y James R. Patton. Mental Retardation. 6th ed. Upper Saddle River, N.J: Merrill/Prentice Hall, 2002.

Cita MLA (9a ed.)

Beirnes-Smith, Mary, et al. Mental Retardation. 6th ed. Merrill/Prentice Hall, 2002.