Dyfyniad APA

International Potash Institute. Agricultural yield potentials in continental climates.

Dyfyniad Arddull Chicago

International Potash Institute. Agricultural Yield Potentials in Continental Climates.

Dyfyniad MLA

International Potash Institute. Agricultural Yield Potentials in Continental Climates.

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