Cita APA

Harpstead, M. I. 1., Bennett, W. F., & Hole, F. D. 1. (1988). Soil science simplified (2. edition.). Ames, Iowa: Iowa State University Press.

Citación estilo Chicago

Harpstead, Milo I. 1930-, William F. Bennett, y Francis Doan 1913- Hole. Soil Science Simplified. 2. edition. Ames, Iowa: Iowa State University Press, 1988.

Cita MLA

Harpstead, Milo I. 1930-, William F. Bennett, y Francis Doan 1913- Hole. Soil Science Simplified. 2. edition. Ames, Iowa: Iowa State University Press, 1988.