APA استشهاد

Huettner, A. F. (1949). Fundamentals of comparative embryology of the vertebrates / 2nd ed (2nd ed.). Macmillan.

استشهاد بنمط شيكاغو

Huettner, Alfred F. Fundamentals of Comparative Embryology of the Vertebrates / 2nd Ed. 2nd ed. New york: Macmillan, 1949.

MLA استشهاد

Huettner, Alfred F. Fundamentals of Comparative Embryology of the Vertebrates / 2nd Ed. 2nd ed. Macmillan, 1949.