APA引文

(2002). Ecotourism and certification: Setting standards in practice. Washington: Iskand Press.

Trích dẫn kiểu Chicago

Ecotourism and Certification: Setting Standards in Practice. Washington: Iskand Press, 2002.

MLA引文

Ecotourism and Certification: Setting Standards in Practice. Washington: Iskand Press, 2002.

警告：这些引文格式不一定是100％准确.