APA引文

Higgins, W., & Gann, G. (2015). The conservation dilemma.

Citación estilo Chicago

Higgins, Wesley, y George Gann. The Conservation Dilemma. 2015.

MLA引文

Higgins, Wesley, y George Gann. The Conservation Dilemma. 2015.

警告：这些引文格式不一定是100％准确.