APA引文

Duffy, R. A. (2002). A trip too far: Ecotourism, politics and exploitation.

Chicago Edition Citation

Duffy, Rosaleen; Author. A Trip Too Far: Ecotourism, Politics and Exploitation. London, Earthscan, 2002.

MLA引文

Duffy, Rosaleen; Author. A Trip Too Far: Ecotourism, Politics and Exploitation. 2002.

警告：這些引文格式不一定是100％准確.