Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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