APA (7th ed.) Citation

Sahakian, W. S. (1975). History and systems of psychology. Schenkman Pub. Co..

Chicago Style (17th ed.) Citation

Sahakian, William S. History and Systems of Psychology. [Cambridge, Mass.]: Schenkman Pub. Co., 1975.

MLA (9th ed.) Citation

Sahakian, William S. History and Systems of Psychology. Schenkman Pub. Co., 1975.