Kumar, P. (2004). Information Sources and services (therory) and practics Vi- Vii. BRPC and LTD.
Chicago-referens (17:e uppl.)Kumar, PSG. Information Sources and Services (therory) and Practics Vi- Vii. Delhi: BRPC and LTD, 2004.
MLA-referens (9:e uppl.)Kumar, PSG. Information Sources and Services (therory) and Practics Vi- Vii. BRPC and LTD, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.