APA (7e ed.) Bronvermelding

Gardiner, D. T., & Miller, R. W. (2008). Soils in our environment (11th ed.). Pearson/Prentice Hall.

Chicago (17e ed.) Bronvermelding

Gardiner, Duane T., en Raymond W. Miller. Soils in Our Environment. 11th ed. Upper Saddle River, N.J: Pearson/Prentice Hall, 2008.

MLA (9e ed.) Bronvermelding

Gardiner, Duane T., en Raymond W. Miller. Soils in Our Environment. 11th ed. Pearson/Prentice Hall, 2008.