Dyfyniad APA

Simmonds, N. W. (1985). Farming systems research. Washington, D.C: The World Bank.

Dyfyniad Arddull Chicago

Simmonds, Norman W. Farming Systems Research. Washington, D.C: The World Bank, 1985.

Dyfyniad MLA

Simmonds, Norman W. Farming Systems Research. Washington, D.C: The World Bank, 1985.

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