APA

Duff R., La Rocca J., Lizzet A., Martin P., Pearce L., Williams M. & Peck C. (19811122). A comparison of the fears of mildly retarded adults with children of their mental age and chronological age matched controls. : Journal of behavior therapy and experimental psychiatry.

Chicago

Duff R, La Rocca J, Lizzet A, Martin P, Pearce L, Williams M and Peck C. 19811122. A comparison of the fears of mildly retarded adults with children of their mental age and chronological age matched controls. : Journal of behavior therapy and experimental psychiatry.

Harvard

Duff R., La Rocca J., Lizzet A., Martin P., Pearce L., Williams M. and Peck C. (19811122). A comparison of the fears of mildly retarded adults with children of their mental age and chronological age matched controls. : Journal of behavior therapy and experimental psychiatry.

MLA

Duff R, La Rocca J, Lizzet A, Martin P, Pearce L, Williams M and Peck C. A comparison of the fears of mildly retarded adults with children of their mental age and chronological age matched controls. : Journal of behavior therapy and experimental psychiatry. 19811122.