DePressles, E. (1939). Guitar (Spanish): A fundamental course for individual or like-instrument class instruction / E.L. DePressles. Rubank.
Chicago-referens (17:e uppl.)DePressles, E.L. Guitar (Spanish): A Fundamental Course for Individual or Like-instrument Class Instruction / E.L. DePressles. Miami, Fl.: Rubank, 1939.
MLA-referens (8:e uppl.)DePressles, E.L. Guitar (Spanish): A Fundamental Course for Individual or Like-instrument Class Instruction / E.L. DePressles. Rubank, 1939.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.