एपीए उद्धरण

Holden Andrew. (2008). Environment and Tourism/2e (2nd ed.). Routledge.

शिकागो स्टाइल उद्धरण

Holden Andrew. Environment and Tourism/2e. 2nd ed. Routledge, 2008.

एमएलए उद्धरण

Holden Andrew. Environment and Tourism/2e. 2nd ed. Routledge, 2008.