APA Citation

Hubbs, C. L. 1., & Gordon, M. Studies of Cyprinodont fishes: XXI. Xiphophorus pygmaeus, new species from Mexico.

Chicago Style Citation

Hubbs, Carl Leavitt 1894-1979, and Myron Gordon. Studies of Cyprinodont Fishes: XXI. Xiphophorus Pygmaeus, New Species From Mexico.

MLA Citation

Hubbs, Carl Leavitt 1894-1979, and Myron Gordon. Studies of Cyprinodont Fishes: XXI. Xiphophorus Pygmaeus, New Species From Mexico.

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