APA (7th ed.) Citation

Storer, T. I., & Usinger, R. L. Elementos de zoologia.

Chicago Style (17th ed.) Citation

Storer, Tracy I., and Robert L. Usinger. Elementos De Zoologia.

MLA (8th ed.) Citation

Storer, Tracy I., and Robert L. Usinger. Elementos De Zoologia.

Warning: These citations may not always be 100% accurate.