APA (7th ed.) Citation

Umapathy, K. (1978). Information sources: An international selective guide. Vikas.

Chicago Style (17th ed.) Citation

Umapathy, K.S. Information Sources: An International Selective Guide. New Delhi: Vikas, 1978.

MLA (9th ed.) Citation

Umapathy, K.S. Information Sources: An International Selective Guide. Vikas, 1978.