Bopp, R. E. E., & Smith, L. C. E. (2005). Reference and information services: An introduction (Ed. 3.).
Chicago Edition CitationBopp, Richard E; Editor, i Linda C; Editor Smith. Reference and Information Services: An Introduction. Ed. 3. Chennai, Rain Tree Publishing Pvt Ltd, 2005.
Cita MLABopp, Richard E; Editor, i Linda C; Editor Smith. Reference and Information Services: An Introduction. Ed. 3. 2005.
Atenció: Aquestes cites poden no estar 100% correctes.