Cita APA

Cassell K A & Hiremath U. (2006). Reference and information services in the 21st century: An introduction. Facet Publisher.

Citación estilo Chicago

Cassell K A and Hiremath U. Reference and Information Services in the 21st Century: An Introduction. London: Facet Publisher, 2006.

Cita MLA

Cassell K A and Hiremath U. Reference and Information Services in the 21st Century: An Introduction. Facet Publisher, 2006.