APA (7th ed.) Citation

Billings, W. D. (1978). Plants and the ecosystem (3rd ed.). Wadsworth Publishing Company, Inc..

Chicago Style (17th ed.) Citation

Billings, William Dwight. Plants and the Ecosystem. 3rd ed. Belmont, Calif: Wadsworth Publishing Company, Inc., 1978.

MLA (9th ed.) Citation

Billings, William Dwight. Plants and the Ecosystem. 3rd ed. Wadsworth Publishing Company, Inc., 1978.

Warning: These citations may not always be 100% accurate.