APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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