Παραπομπή APA

Koch, S. (1959). Psychology: A Study of a Science. McGraw-Hill.

Παραπομπή Chicago Style

Koch, Sigmund. Psychology: A Study of a Science. New York: McGraw-Hill, 1959.

Παραπομπή MLA

Koch, Sigmund. Psychology: A Study of a Science. McGraw-Hill, 1959.