Dyfyniad APA
Aristotle & Thompson, D. W. (2001). History of animals. Virginia Tech.
Dyfyniad Arddull Chicago
Aristotle and D'Arcy Wentworth Thompson. History of Animals. Blacksburg, VA: Virginia Tech, 2001.
Dyfyniad MLA
Aristotle and D'Arcy Wentworth Thompson. History of Animals. Virginia Tech, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.