APA

Orzack S. H., Sohn J. J., Kallman K. D., Levin S. a. & Johnston R.Maintenance of the three sex chromosome polymorphism in the platyfish, Xiphophorus maculatus. : .

Chicago

Orzack S H, Sohn J J, Kallman Klaus D, Levin S a and Johnston R.Maintenance of the three sex chromosome polymorphism in the platyfish, Xiphophorus maculatus. : .

Harvard

Orzack S. H., Sohn J. J., Kallman K. D., Levin S. a. and Johnston R.Maintenance of the three sex chromosome polymorphism in the platyfish, Xiphophorus maculatus. : .

MLA

Orzack S H, Sohn J J, Kallman Klaus D, Levin S a and Johnston R.: . .