Dyfyniad APA

DENT, D., & YOUNG, A. (1981). Soil survey and land evaluation. Goerge Allen and Unwin.

Dyfyniad Arddull Chicago

DENT, David, and Anthony YOUNG. Soil Survey and Land Evaluation. London: Goerge Allen and Unwin, 1981.

Dyfyniad MLA

DENT, David, and Anthony YOUNG. Soil Survey and Land Evaluation. Goerge Allen and Unwin, 1981.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.