Dyfyniad APA
Holden, A. (2016). Environment and tourism (3rd ed.). Routledge.
Dyfyniad Arddull Chicago
Holden, Andrew. Environment and Tourism. 3rd ed. London: Routledge, 2016.
Dyfyniad MLA
Holden, Andrew. Environment and Tourism. 3rd ed. Routledge, 2016.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.