APA (7th ed.) Citation

Rigtrup, M., & Kjær, M. (2013). Modern vocal music: Handbook for choir leaders. Gule Plader.

Chicago Style (17th ed.) Citation

Rigtrup, Malene, and Morton Kjær. Modern Vocal Music: Handbook for Choir Leaders. [S.l.]: Gule Plader, 2013.

MLA (9th ed.) Citation

Rigtrup, Malene, and Morton Kjær. Modern Vocal Music: Handbook for Choir Leaders. Gule Plader, 2013.

Warning: These citations may not always be 100% accurate.