APA-Zitierstil (7. Ausg.)

Cassell, K. A., & Hiremath, U. (2011). Reference and information services in the 21st century: An introduction (2., rev. ed.). Facet.

Chicago-Zitierstil (17. Ausg.)

Cassell, Kay Ann, und Uma Hiremath. Reference and Information Services in the 21st Century: An Introduction. 2., rev. ed. London: Facet, 2011.

MLA-Zitierstil (9. Ausg.)

Cassell, Kay Ann, und Uma Hiremath. Reference and Information Services in the 21st Century: An Introduction. 2., rev. ed. Facet, 2011.