DePressles, E. (1939). Guitar (Spanish): A fundamental course for individual or like-instrument class instruction / E.L. DePressles. Rubank.
Lua i Stíl Chicago (17ú heag.)DePressles, E.L. Guitar (Spanish): A Fundamental Course for Individual or Like-instrument Class Instruction / E.L. DePressles. Miami, Fl.: Rubank, 1939.
Lua MLA (8ú heag.)DePressles, E.L. Guitar (Spanish): A Fundamental Course for Individual or Like-instrument Class Instruction / E.L. DePressles. Rubank, 1939.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.