APA

Ffolliott P. F., Ortega Rubio A., . (1999). Ecology and management of forests, woodlands, and shrublands in the dryland regions of the United States and Mexico, perspectives for the 21 st Century. La Paz, B.C.S: University of Arizona : Centro de Investigaciones Biológicas del Noroeste.

Chicago

Ffolliott Peter F, Ortega Rubio Alfredo, . 1999. Ecology and management of forests, woodlands, and shrublands in the dryland regions of the United States and Mexico, perspectives for the 21 st Century. La Paz, B.C.S: University of Arizona : Centro de Investigaciones Biológicas del Noroeste.

Harvard

Ffolliott P. F., Ortega Rubio A., . (1999). Ecology and management of forests, woodlands, and shrublands in the dryland regions of the United States and Mexico, perspectives for the 21 st Century. La Paz, B.C.S: University of Arizona : Centro de Investigaciones Biológicas del Noroeste.

MLA

Ffolliott Peter F, Ortega Rubio Alfredo, . Ecology and management of forests, woodlands, and shrublands in the dryland regions of the United States and Mexico, perspectives for the 21 st Century. La Paz, B.C.S: University of Arizona : Centro de Investigaciones Biológicas del Noroeste. 1999.