Citazione Stile APA (7a Edizione)

Barham, T. J., & Nelson, D. L. (1991). The boy's changing voice: New solutions for today's choral teacher. Belwin Mills.

Citazione stile Chigago Style (17a edizione)

Barham, Terry Joe, e Darolyne L. Nelson. The Boy's Changing Voice: New Solutions for Today's Choral Teacher. Miami, Fl.: Belwin Mills, 1991.

Citatione MLA (9a ed.)

Barham, Terry Joe, e Darolyne L. Nelson. The Boy's Changing Voice: New Solutions for Today's Choral Teacher. Belwin Mills, 1991.