Dyfyniad APA

J F D Greenhalgh, P Mc Donald, R A Edwards, & R A Edwards. (1957). Animal nutrition (3rd.). England.

Dyfyniad Arddull Chicago

J F D Greenhalgh, P Mc Donald, R A Edwards, and R A Edwards. Animal Nutrition. 3rd. England, 1957.

Dyfyniad MLA

J F D Greenhalgh, et al. Animal Nutrition. 3rd. England, 1957.

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