APA

Storer T. I., Usinger R. L., . (1971). Element of zoology. New York: Mcgraw-Hill.

Chicago

Storer Tracy I, Usinger Robert L, . 1971. Element of zoology. New York: Mcgraw-Hill.

Harvard

Storer T. I., Usinger R. L., . (1971). Element of zoology. New York: Mcgraw-Hill.

MLA

Storer Tracy I, Usinger Robert L, . Element of zoology. New York: Mcgraw-Hill. 1971.