Παραπομπή APA

Wolman, B. B. (1960). Contemporary theories and systems in psychology. Harper & Row.

Παραπομπή Chicago Style

Wolman, Benjamin B. Contemporary Theories and Systems in Psychology. London: Harper & Row, 1960.

Παραπομπή MLA

Wolman, Benjamin B. Contemporary Theories and Systems in Psychology. Harper & Row, 1960.