एपीए उद्धरण

Singh, P. (1998). Challenges to Indian commerce and business. Deep & Deep.

शिकागो स्टाइल उद्धरण

Singh, P.N. Challenges to Indian Commerce and Business. New Delhi: Deep & Deep, 1998.

एमएलए उद्धरण

Singh, P.N. Challenges to Indian Commerce and Business. Deep & Deep, 1998.