APA (7th ed.) Citation

Servín, J. (2000). Duration and frecuency of chorus howling of the mexican wolf (Canis lupus baileyi). Instituto de Ecología, A.C.

Chicago Style (17th ed.) Citation

Servín, Jorge. Duration and Frecuency of Chorus Howling of the Mexican Wolf (Canis Lupus Baileyi). Instituto de Ecología, A.C, 2000.

MLA (9th ed.) Citation

Servín, Jorge. Duration and Frecuency of Chorus Howling of the Mexican Wolf (Canis Lupus Baileyi). Instituto de Ecología, A.C, 2000.