Citazione APA

Bopp, R. E. e., & Smith, L. e. b. (2011). Reference and information services: Introduction (4th ed.). ABC-CLIO, LLC, 2011.

Stile di citazione Chicago

Bopp, Richard E; ed, e Linda.C; ed. by Smith. Reference and Information Services: Introduction. 4th ed. California: ABC-CLIO, LLC, 2011, 2011.

Citazione MLA

Bopp, Richard E; ed, e Linda.C; ed. by Smith. Reference and Information Services: Introduction. 4th ed. ABC-CLIO, LLC, 2011, 2011.