Dyfyniad APA

Atkenson, Dickson, & Harbaugh. (2004). Diseases of cattle. Biotech books.

Dyfyniad Arddull Chicago

Atkenson, Dickson, and Harbaugh. Diseases of Cattle. Biotech books, 2004.

Dyfyniad MLA

Atkenson, et al. Diseases of Cattle. Biotech books, 2004.

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