Cita APA (7th ed.)

Kelkar, S. (2009). Information system: A concise study (1.). PHI.

Cita Chicago (17th ed.)

Kelkar, S.A. Information System: A Concise Study. 1. New Delhi: PHI, 2009.

Cita MLA (9th ed.)

Kelkar, S.A. Information System: A Concise Study. 1. PHI, 2009.