APA

Cronin M. a., Hills S., Born E. W. & Patton J. C.Mitochondrial DNA variation in Atlantic and Pacific walruses. : .

Chicago

Cronin Matthew a, Hills Susan, Born Erik W and Patton John C.Mitochondrial DNA variation in Atlantic and Pacific walruses. : .

Harvard

Cronin M. a., Hills S., Born E. W. and Patton J. C.Mitochondrial DNA variation in Atlantic and Pacific walruses. : .

MLA

Cronin Matthew a, Hills Susan, Born Erik W and Patton John C.: . .