Citazione Stile APA (7a Edizione)

Vargas, M. B. F. (2014). Vocal workout. University of the Philippines Visayas.

Citazione stile Chigago Style (17a edizione)

Vargas, Mary Babbeth F. Vocal Workout. Iloilo City: University of the Philippines Visayas, 2014.

Citatione MLA (9a ed.)

Vargas, Mary Babbeth F. Vocal Workout. University of the Philippines Visayas, 2014.