एपीए उद्धरण

Walker, R. (2016). Tourism 1 (Student's Book). Oxford University press.

शिकागो स्टाइल उद्धरण

Walker, Robin. Tourism 1 (Student's Book). Oxford University press, 2016.

एमएलए उद्धरण

Walker, Robin. Tourism 1 (Student's Book). Oxford University press, 2016.