Cita APA (7th ed.)
Holden, A. (2016). Environment and tourism (3rd ed.). Routledge.
Cita Chicago (17th ed.)
Holden, Andrew. Environment and Tourism. 3rd ed. London: Routledge, 2016.
Cita MLA (9th ed.)
Holden, Andrew. Environment and Tourism. 3rd ed. Routledge, 2016.
Atenció: Aquestes cites poden no estar 100% correctes.