Citazione Stile APA (7a Edizione)

Bopp, R. E., & Smith, L. C. (2001). Reference and Information Services: An Introduction. Third Edition. Library and Information Science Text Series.

Citazione stile Chigago Style (17a edizione)

Bopp, Richard E., e Linda C. Smith. Reference and Information Services: An Introduction. Third Edition. Library and Information Science Text Series. 2001.

Citatione MLA (9a ed.)

Bopp, Richard E., e Linda C. Smith. Reference and Information Services: An Introduction. Third Edition. Library and Information Science Text Series. 2001.