APA استشهاد

Bradley M Patten. (1952). Early embryology of the chick. New York.

استشهاد بنمط شيكاغو

Bradley M Patten. Early Embryology of the Chick. New York, 1952.

MLA استشهاد

Bradley M Patten. Early Embryology of the Chick. New York, 1952.