एपीए उद्धरण

Singh, R. (2011). Tourism sector: Facing the challenge. Sonali.

शिकागो स्टाइल उद्धरण

Singh, Rajesh. Tourism Sector: Facing the Challenge. New Delhi: Sonali, 2011.

एमएलए उद्धरण

Singh, Rajesh. Tourism Sector: Facing the Challenge. Sonali, 2011.