Dent, D., & Young, A. (1981). Soil survey and land evaluation. George Alber and Unwin.
Chicago (17e ed.) BronvermeldingDent, David, en Anthony Young. Soil Survey and Land Evaluation. London: George Alber and Unwin, 1981.
MLA (9e ed.) BronvermeldingDent, David, en Anthony Young. Soil Survey and Land Evaluation. George Alber and Unwin, 1981.
Let op: Deze citaties zijn niet altijd 100% accuraat.