Nettl, B., Behague, G., & Goertzen, V. W. (1990). Folk and traditional music of the Western continents (3rd ed.). Prentice Hall.

Nettl, Bruno, Gerard Behague, and Valerie Woodring Goertzen. Folk and Traditional Music of the Western Continents. 3rd ed. Englewood Cliffs, New Jersey: Prentice Hall, 1990.

Nettl, Bruno, et al. Folk and Traditional Music of the Western Continents. 3rd ed. Prentice Hall, 1990.