APA (7e ed.) Bronvermelding
Bopp, R. E., & Smith, L. C. (2011). Reference and information services: An introduction (4th ed.). Libraries Unlimited.
Chicago (17e ed.) Bronvermelding
Bopp, Richard E., en Linda C. Smith. Reference and Information Services: An Introduction. 4th ed. Santa Barbara, Calif: Libraries Unlimited, 2011.
MLA (9e ed.) Bronvermelding
Bopp, Richard E., en Linda C. Smith. Reference and Information Services: An Introduction. 4th ed. Libraries Unlimited, 2011.
Let op: Deze citaties zijn niet altijd 100% accuraat.