Patten, B. M. (1971). Early embryology of the chick (5th ed.). G.M.S. Pub.
Cita Chicago (17th ed.)Patten, Bradley Merrill. Early Embryology of the Chick. 5th ed. Quezon City: G.M.S. Pub, 1971.
Cita MLA (9th ed.)Patten, Bradley Merrill. Early Embryology of the Chick. 5th ed. G.M.S. Pub, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.