APA (7th ed.) Citation

Duellman, W. E. A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, México.

Chicago Style (17th ed.) Citation

Duellman, William Edward. A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, México.

MLA (9th ed.) Citation

Duellman, William Edward. A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, México.

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