Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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