APA引文

Badan, B. (2007). Ecotourism. Common wealth.

Chicago Edition Citation

Badan, B.S. Ecotourism. New Delhi: Common wealth, 2007.

MLA引文

Badan, B.S. Ecotourism. Common wealth, 2007.

警告：这些引文格式不一定是100％准确.