APA

s.a, .The Lay of the Rooster, the Carriers of Heredity, Identical Twins. : .

Chicago

s.a, .The Lay of the Rooster, the Carriers of Heredity, Identical Twins. : .

Harvard

s.a, .The Lay of the Rooster, the Carriers of Heredity, Identical Twins. : .

MLA

s.a, .: . .