APA aipamena

Kern, M. K. (2009). Virtual reference best practices: Tailoring services to your library. American Library Association.

Chicago Style aipamena

Kern, M. Kathleen. Virtual Reference Best Practices: Tailoring Services to Your Library. Chicago: American Library Association, 2009.

MLA aipamena

Kern, M. Kathleen. Virtual Reference Best Practices: Tailoring Services to Your Library. American Library Association, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.