एपीए उद्धरण

Bull, A. (1995). The economics of travel and tourism (2nd ed.). Melbourne: Longman.

शिकागो स्टाइल उद्धरण

Bull, Adrian. The Economics of Travel and Tourism. 2nd ed. Melbourne: Longman, 1995.

एमएलए उद्धरण

Bull, Adrian. The Economics of Travel and Tourism. 2nd ed. Melbourne: Longman, 1995.