APA

Castell P. J., Stang D. J. & Fretz B. R. (1980). Preparing for graduate study in psychology: not for seniors only!. Washington, D.C: American Psychological Association.

Chicago

Castell P J, Stang David J and Fretz Bruce R. 1980. Preparing for graduate study in psychology: not for seniors only!. Washington, D.C: American Psychological Association.

Harvard

Castell P. J., Stang D. J. and Fretz B. R. (1980). Preparing for graduate study in psychology: not for seniors only!. Washington, D.C: American Psychological Association.

MLA

Castell P J, Stang David J and Fretz Bruce R. Preparing for graduate study in psychology: not for seniors only!. Washington, D.C: American Psychological Association. 1980.