Heyel, C. (1962). Management for modern supervisors. American Management Association.
Citazione stile Chigago Style (17a edizione)Heyel, Carl. Management for Modern Supervisors. New York: American Management Association, 1962.
Citatione MLA (9a ed.)Heyel, Carl. Management for Modern Supervisors. American Management Association, 1962.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.