Ve. Thillainayagam & Smith L C. (2001). Reference and information services: An introduction (3.). Libraries unlimited.
Citación estilo ChicagoVe. Thillainayagam y Smith L C. Reference and Information Services: An Introduction. 3. Coloeado: Libraries unlimited, 2001.
Cita MLAVe. Thillainayagam y Smith L C. Reference and Information Services: An Introduction. 3. Libraries unlimited, 2001.
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