Παραπομπή APA

Mc Ewen, R. S. (1949). Vertebrate embryology: : 3rd ed (3rd ed.). Henry Holt and company.

Παραπομπή Chicago Style

Mc Ewen, Robert S. Vertebrate Embryology: : 3rd Ed. 3rd ed. New York: Henry Holt and company, 1949.

Παραπομπή MLA

Mc Ewen, Robert S. Vertebrate Embryology: : 3rd Ed. 3rd ed. Henry Holt and company, 1949.