Using the link I scrolled down in our catalog to the section called
"Responsibility" which indicates who did what for this video:
"Responsibility: Independent Productions ; screenplay
by Gregory Nava and Anna H. Thomas ; original story by Gregory Nava ;
directed by Gregory Nava ; produced by Anna Thomas ... in association
with American Playhouse."
Thomas, A (Producer) & Nava, G. (Director). (1983). El Norte [Motion Picture]. United States: Independent Productions.