Dyfyniad APA

FAO. (1993). World soil resources reports N.73: An international framework for evaluating sustainable land management. Rome: FAO.

Dyfyniad Arddull Chicago

FAO. World Soil Resources Reports N.73: An International Framework for Evaluating Sustainable Land Management. Rome: FAO, 1993.

Dyfyniad MLA

FAO. World Soil Resources Reports N.73: An International Framework for Evaluating Sustainable Land Management. Rome: FAO, 1993.

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