Dyfyniad APA

(1938). Circular. University of Arkansas, College of Agriculture : [U.S. Dept. of Agriculture, cooperating].

Dyfyniad Arddull Chicago

Circular. [Little Rock, Ark.]: University of Arkansas, College of Agriculture : [U.S. Dept. of Agriculture, cooperating], 1938.

Dyfyniad MLA

Circular. University of Arkansas, College of Agriculture : [U.S. Dept. of Agriculture, cooperating], 1938.

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