Dyfyniad APA

Acker, D., & Cunningham, M. (1991). Animal science and industry (4th ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Acker, Duane, and Merle Cunningham. Animal Science and Industry. 4th ed. Englewood Cliffs, N.J: Prentice Hall, 1991.

Dyfyniad MLA

Acker, Duane, and Merle Cunningham. Animal Science and Industry. 4th ed. Prentice Hall, 1991.

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