APA (7th ed.) Citation

Willis, W. O. (1956). Soil temperature, mulches and corn growth. [publisher not identified].

Chicago Style (17th ed.) Citation

Willis, Wayne O. Soil Temperature, Mulches and Corn Growth. [Place of publication not identified]: [publisher not identified], 1956.

MLA (9th ed.) Citation

Willis, Wayne O. Soil Temperature, Mulches and Corn Growth. [publisher not identified], 1956.