APA (7th ed.) Citation

Harpster, R. W. (1984). Technique in singing: A program for singers and teachers. Schirmer Books u.a.

Chicago Style (17th ed.) Citation

Harpster, Richard W. Technique in Singing: A Program for Singers and Teachers. New York: Schirmer Books u.a, 1984.

MLA (9th ed.) Citation

Harpster, Richard W. Technique in Singing: A Program for Singers and Teachers. Schirmer Books u.a, 1984.