APA引文

Nagaraju G & Zia Uar Rehman. Progress and Prospectus of Ecotourism.

Chicago Edition Citation

Nagaraju G and Zia Uar Rehman. Progress and Prospectus of Ecotourism.

MLA引文

Nagaraju G and Zia Uar Rehman. Progress and Prospectus of Ecotourism.

警告：這些引文格式不一定是100％准確.