Dyfyniad APA

Hakan Jansson. (1995). World soil resources reports N79: Status of sulphur in soils and plants of thirty countries. Rome: FAO.

Dyfyniad Arddull Chicago

Hakan Jansson. World Soil Resources Reports N79: Status of Sulphur in Soils and Plants of Thirty Countries. Rome: FAO, 1995.

Dyfyniad MLA

Hakan Jansson. World Soil Resources Reports N79: Status of Sulphur in Soils and Plants of Thirty Countries. Rome: FAO, 1995.

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