Dyfyniad APA

Hellin, J. (2006). Better land husbandry: From soil conservation to holistic land management. Science Publishers.

Dyfyniad Arddull Chicago

Hellin, Jon. Better Land Husbandry: From Soil Conservation to Holistic Land Management. Enfield, NH: Science Publishers, 2006.

Dyfyniad MLA

Hellin, Jon. Better Land Husbandry: From Soil Conservation to Holistic Land Management. Science Publishers, 2006.

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