APA (7th ed.) Citation

Duellman, W. E. Middle American Frogs of the Hyla microcephala Group.

Chicago Style (17th ed.) Citation

Duellman, William Edward. Middle American Frogs of the Hyla Microcephala Group.

MLA (9th ed.) Citation

Duellman, William Edward. Middle American Frogs of the Hyla Microcephala Group.

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