APA (7th ed.) Citation

Heizmann, K. Vocal warm-ups: 200 exercises for choral and solo singers.

Chicago Style (17th ed.) Citation

Heizmann, Klaus. Vocal Warm-ups: 200 Exercises for Choral and Solo Singers.

MLA (9th ed.) Citation

Heizmann, Klaus. Vocal Warm-ups: 200 Exercises for Choral and Solo Singers.

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