MLA

Roberts, Michael C, et al. Handbook of Intellectual and Developmental Disabilities. Springer US, 2007.

APA

Roberts, M. C, Jacobson, J. W, Mulick, J. Anton, Peterson, L., Rojahn, J., & Mulick, J. A. (2007). Handbook of Intellectual and Developmental Disabilities. Springer US.

Chicago

Roberts, Michael C., John W Jacobson, James Anton Mulick, Lizette Peterson, Johannes Rojahn, and James A Mulick. Handbook of Intellectual and Developmental Disabilities. : Springer US, 2007.