Dyfyniad APA

American Society of Agronomy & Crop Science Society of America. (2018). Agrosystems, geosciences & environment. American Society of Agronomy : Crop Science Society of America.

Dyfyniad Arddull Chicago

American Society of Agronomy and Crop Science Society of America. Agrosystems, Geosciences & Environment. Madison, WI: American Society of Agronomy : Crop Science Society of America, 2018.

Dyfyniad MLA

American Society of Agronomy and Crop Science Society of America. Agrosystems, Geosciences & Environment. American Society of Agronomy : Crop Science Society of America, 2018.

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