Ulrich, R. E. (1966). Control of human behavior. Scott, Foresman.
Cita Chicago (17th ed.)Ulrich, Roger Elwood. Control of Human Behavior. Glenview, IL: Scott, Foresman, 1966.
Cita MLA (9th ed.)Ulrich, Roger Elwood. Control of Human Behavior. Scott, Foresman, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.