Galarza, E., Barrera, M., & Vialpando, G. (1974). Action research: In defense of the barrio : interviews with Ernesto Galarza, Guillermo Flores and Rosalio Muñoz. Los Angeles: Aztlán Publications.

Galarza, Ernesto, Mario Barrera, and Geralda Vialpando. Action Research: In Defense of the Barrio : Interviews With Ernesto Galarza, Guillermo Flores and Rosalio Muñoz. Los Angeles: Aztlán Publications, 1974.

Galarza, Ernesto, Mario Barrera, and Geralda Vialpando. Action Research: In Defense of the Barrio : Interviews With Ernesto Galarza, Guillermo Flores and Rosalio Muñoz. Los Angeles: Aztlán Publications, 1974.