Dyfyniad APA

Rutgers University. Soil science. Lippincott Williams & Wilkins Co. [etc.].

Dyfyniad Arddull Chicago

Rutgers University. Soil Science. Baltimore [etc.]: Lippincott Williams & Wilkins Co. [etc.].

Dyfyniad MLA

Rutgers University. Soil Science. Lippincott Williams & Wilkins Co. [etc.].

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