Dyfyniad APA

Purdue University. Agricultural Experiment Station. (1957). Research bulletin. [Agricultural Experiment Station, Purdue University].

Dyfyniad Arddull Chicago

Purdue University. Agricultural Experiment Station. Research Bulletin. West Lafayette, Ind.: [Agricultural Experiment Station, Purdue University], 1957.

Dyfyniad MLA

Purdue University. Agricultural Experiment Station. Research Bulletin. [Agricultural Experiment Station, Purdue University], 1957.

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