APA (7th ed.) Citation

PROSCHOWSKI, F. The Singing School of the beginner's voice book.

Chicago Style (17th ed.) Citation

PROSCHOWSKI, Frantz. The Singing School of the Beginner's Voice Book.

MLA (8th ed.) Citation

PROSCHOWSKI, Frantz. The Singing School of the Beginner's Voice Book.

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