Cita APA (7a ed.)

Rickard, H. C. (1971). Behavioral intervention in human problems. Pergamon general psychology series.

Cita Chicago Style (17a ed.)

Rickard, Henry C. "Behavioral Intervention in Human Problems." Pergamon General Psychology Series 1971.

Cita MLA (8a ed.)

Rickard, Henry C. "Behavioral Intervention in Human Problems." Pergamon General Psychology Series, 1971.