Citazione Stile APA (7a Edizione)

Watterson, R. L., & Sweeney, R. M. (1973). Laboratory studies of chick, pig, and frog embryos (3rd ed.). Burgess Pub.

Citazione stile Chigago Style (17a edizione)

Watterson, Ray L., e Robert M. Sweeney. Laboratory Studies of Chick, Pig, and Frog Embryos. 3rd ed. Minneapolis, Minnesota: Burgess Pub, 1973.

Citatione MLA (9a ed.)

Watterson, Ray L., e Robert M. Sweeney. Laboratory Studies of Chick, Pig, and Frog Embryos. 3rd ed. Burgess Pub, 1973.