Cita APA

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

Citación estilo Chicago

Watterson, Ray L., y Robert M. Sweeney. Laboratory Studies of Chick, Pig, and Frog Embryos. 3a. ed. Minneapolis: Burgess, 1973.

Cita MLA

Watterson, Ray L., y Robert M. Sweeney. Laboratory Studies of Chick, Pig, and Frog Embryos. 3a. ed. Minneapolis: Burgess, 1973.