Dyfyniad APA

FAO. (1990). World soil resources reports N.65: Eighth meeting of the East and Southern African sub-committee for soil correlation and evalution. Rome: FAO.

Dyfyniad Arddull Chicago

FAO. World Soil Resources Reports N.65: Eighth Meeting of the East and Southern African Sub-committee for Soil Correlation and Evalution. Rome: FAO, 1990.

Dyfyniad MLA

FAO. World Soil Resources Reports N.65: Eighth Meeting of the East and Southern African Sub-committee for Soil Correlation and Evalution. Rome: FAO, 1990.

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