APA (7e ed.) Bronvermelding

Hillel, D. (1972). Optimizing the soil physical environment toward greater crop yields. Academic Press.

Chicago (17e ed.) Bronvermelding

Hillel, Daniel. Optimizing the Soil Physical Environment Toward Greater Crop Yields. New York: Academic Press, 1972.

MLA (9e ed.) Bronvermelding

Hillel, Daniel. Optimizing the Soil Physical Environment Toward Greater Crop Yields. Academic Press, 1972.