APA

Mayr E., Linsley E. G. & Usinger R. L. (1953). Methods and principles of systematic zoology. New York: Mcgraw-Hill.

Chicago

Mayr Ernst, Linsley E Gorton and Usinger Robert L. 1953. Methods and principles of systematic zoology. New York: Mcgraw-Hill.

Harvard

Mayr E., Linsley E. G. and Usinger R. L. (1953). Methods and principles of systematic zoology. New York: Mcgraw-Hill.

MLA

Mayr Ernst, Linsley E Gorton and Usinger Robert L. Methods and principles of systematic zoology. New York: Mcgraw-Hill. 1953.