Herrold, R. M., & Harrold, R. M. (1991). New approaches to elementary classroom music (Second edition.). Prentice Hall.
Citazione stile Chigago Style (17a edizione)Herrold, Rebecca M., e Rebecca M. Harrold. New Approaches to Elementary Classroom Music. Second edition. Englewood Cliffs, N.J: Prentice Hall, 1991.
Citatione MLA (9a ed.)Herrold, Rebecca M., e Rebecca M. Harrold. New Approaches to Elementary Classroom Music. Second edition. Prentice Hall, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.