APA

Halffter G., Barbault R., . (1981). Ecology of the Chihuahuan Desert : organization of some vertebrate communities. Mexico, D.F: Instituto de Ecología.

Chicago

Halffter Gonzalo, Barbault Robert, . 1981. Ecology of the Chihuahuan Desert : organization of some vertebrate communities. Mexico, D.F: Instituto de Ecología.

Harvard

Halffter G., Barbault R., . (1981). Ecology of the Chihuahuan Desert : organization of some vertebrate communities. Mexico, D.F: Instituto de Ecología.

MLA

Halffter Gonzalo, Barbault Robert, . Ecology of the Chihuahuan Desert : organization of some vertebrate communities. Mexico, D.F: Instituto de Ecología. 1981.