APA (7th ed.) Citation

Tomera, A. N. (1972). Understanding ecology; a learn-by-doing work text. J. Weston Walch.

Chicago Style (17th ed.) Citation

Tomera, Audrey N. Understanding Ecology; a Learn-by-doing Work Text. Portland, Maine: J. Weston Walch, 1972.

MLA (9th ed.) Citation

Tomera, Audrey N. Understanding Ecology; a Learn-by-doing Work Text. J. Weston Walch, 1972.