Cita APA (7a ed.)

Wehmeyer, M. L., & Patton, J. R. (2000). Mental retardation in the 21st century. Pro-Ed.

Cita Chicago Style (17a ed.)

Wehmeyer, Michael L., y James R. Patton. Mental Retardation in the 21st Century. Austin: Pro-Ed, 2000.

Cita MLA (9a ed.)

Wehmeyer, Michael L., y James R. Patton. Mental Retardation in the 21st Century. Pro-Ed, 2000.