Cita APA (7a ed.)

Fry, P. S. (1989). Psychological perspectives of helplessness and control in the elderly. North-Holland ; Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co..

Cita Chicago Style (17a ed.)

Fry, Prem S. Psychological Perspectives of Helplessness and Control in the Elderly. Amsterdam ; New York : New York, N.Y., U.S.A.: North-Holland ; Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co., 1989.

Cita MLA (8a ed.)

Fry, Prem S. Psychological Perspectives of Helplessness and Control in the Elderly. North-Holland ; Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co., 1989.