APA (7th ed.) Citation

(1914). Catalogue of opera librettos printed before 1800 / prepared by Oscar George Theodore Sonneck, chief of the Division of Music ..

Chicago Style (17th ed.) Citation

Catalogue of Opera Librettos Printed Before 1800 / Prepared by Oscar George Theodore Sonneck, Chief of the Division of Music .. 1914.

MLA (9th ed.) Citation

Catalogue of Opera Librettos Printed Before 1800 / Prepared by Oscar George Theodore Sonneck, Chief of the Division of Music .. 1914.

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