APA引文

Walther, J. (2014). Earth's natural resources. Jones & Bartlett Learning.

Chicago Edition Citation

Walther, John. Earth's Natural Resources. Burlington, MA: Jones & Bartlett Learning, 2014.

MLA引文

Walther, John. Earth's Natural Resources. Jones & Bartlett Learning, 2014.

警告：這些引文格式不一定是100％准確.