1. American Standard of Perfection, 1953. American Poultry Association, Inc., Atlanta, Georgia.
2. Mendel's Principles of Heredity;Bateson,1910
3. Experimental studies in the physiology of heredity;Bateson;Poultry. Reports Evol. Comm. Roy. Soc.,1906
4. Are mosaic genes semi-allelic? Amer;Castle;Nat.,1950
5. Mendelian inheritance of sex;Hagedoorn;Arch. Entw. Mech. Org.,1909