APA (7th ed.) Citation

Gaus, A., Lambeth, V., & Rothenberger, R. Steps in fertilizing garden soil. Dept. of Agriculture, Office of Communication, [1977?].

Chicago Style (17th ed.) Citation

Gaus, Art, Vic Lambeth, and Ray Rothenberger. Steps in Fertilizing Garden Soil. [Washington]: Dept. of Agriculture, Office of Communication, [1977?].

MLA (9th ed.) Citation

Gaus, Art, et al. Steps in Fertilizing Garden Soil. Dept. of Agriculture, Office of Communication, [1977?].