Cita APA (7th ed.)

Tallmadge, I., & Lillya, C. (1942). 56 progressive duets: For individuals & classes. Belwin.

Cita Chicago (17th ed.)

Tallmadge, Irving, i Clifford Lillya. 56 Progressive Duets: For Individuals & Classes. New York: Belwin, 1942.

Cita MLA (9th ed.)

Tallmadge, Irving, i Clifford Lillya. 56 Progressive Duets: For Individuals & Classes. Belwin, 1942.