Vargas, M. B. F. (2014). Vocal workout. University of the Philippines Visayas.
Cita Chicago (17th ed.)Vargas, Mary Babbeth F. Vocal Workout. Iloilo City: University of the Philippines Visayas, 2014.
Cita MLA (9th ed.)Vargas, Mary Babbeth F. Vocal Workout. University of the Philippines Visayas, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.