Citazione APA

Sharma, J. S. (2004). Reference services and sources of information. Ess Ess.

Stile di citazione Chicago

Sharma, Jagdish S. Reference Services and Sources of Information. New Delhi: Ess Ess, 2004.

Citazione MLA

Sharma, Jagdish S. Reference Services and Sources of Information. Ess Ess, 2004.