Citazione Stile APA (7a Edizione)

Katz, W. A. (1978). Reference services and reference processes (3rd ed.). McGraw-Hill Book Company.

Citazione stile Chigago Style (17a edizione)

Katz, William A. Reference Services and Reference Processes. 3rd ed. New York [etc.]: McGraw-Hill Book Company, 1978.

Citatione MLA (9a ed.)

Katz, William A. Reference Services and Reference Processes. 3rd ed. McGraw-Hill Book Company, 1978.