APA citiranje

Servín, J. (2000). Duration and frequency of chorus howling of the mexican wolf (Canis lupus baileyi). Acta Zoológica Mexicana (nueva serie).

Citação norma Chicago

Servín, Jorge. "Duration and Frequency of Chorus Howling of the Mexican Wolf (Canis Lupus Baileyi)." Acta Zoológica Mexicana (nueva Serie) 2000.

MLA citiranje

Servín, Jorge. "Duration and Frequency of Chorus Howling of the Mexican Wolf (Canis Lupus Baileyi)." Acta Zoológica Mexicana (nueva Serie) 2000.