Citazione Stile APA (7a Edizione)

McCombs, C. F. (1929). The Reference department. American Library Association.

Citazione stile Chigago Style (17a edizione)

McCombs, Charles Flowers. The Reference Department. CHicago: American Library Association, 1929.

Citatione MLA (9a ed.)

McCombs, Charles Flowers. The Reference Department. American Library Association, 1929.