APA引文

Billings, W. D. (1964). Plants and the ecosystem. Wadsworth.

Chicago Style (17th ed.) Citation

Billings, William Dwight. Plants and the Ecosystem. Belmont, CA: Wadsworth, 1964.

MLA引文

Billings, William Dwight. Plants and the Ecosystem. Wadsworth, 1964.

警告：這些引文格式不一定是100％准確.