एपीए उद्धरण

Fennell, D. A., & Malloy, D. C. (2015). Aspects of tourism: Codes of ethics in tourism. S.l. : s.n.

शिकागो स्टाइल उद्धरण

Fennell, David A., और David Cruise Malloy. Aspects of Tourism: Codes of Ethics in Tourism. S.l. : s.n, 2015.

एमएलए उद्धरण

Fennell, David A., और David Cruise Malloy. Aspects of Tourism: Codes of Ethics in Tourism. S.l. : s.n, 2015.