APA (7th ed.) Citation

Corp, R., & Sorensen, R. D. (1987). The choral singer's companion. Batsford.

Chicago Style (17th ed.) Citation

Corp, Ronald, and Rodney D. Sorensen. The Choral Singer's Companion. London: Batsford, 1987.

MLA (9th ed.) Citation

Corp, Ronald, and Rodney D. Sorensen. The Choral Singer's Companion. Batsford, 1987.