APA (7th ed.) Citation

Elwell, H. A. (1986). Soil conservation (1. publ.). The College Press.

Chicago Style (17th ed.) Citation

Elwell, Henry A. Soil Conservation. 1. publ. Harare: The College Press, 1986.

MLA (9th ed.) Citation

Elwell, Henry A. Soil Conservation. 1. publ. The College Press, 1986.