APA (7th ed.) Citation

Sonneck, O. G. T., & Upton, W. T. (1945). A bibliography of early secular American music <18th century>. The Library of Congress, Music division.

Chicago Style (17th ed.) Citation

Sonneck, Oscar George Theodore, and William Treat Upton. A Bibliography of Early Secular American Music <18th Century>. [Washington]: The Library of Congress, Music division, 1945.

MLA (9th ed.) Citation

Sonneck, Oscar George Theodore, and William Treat Upton. A Bibliography of Early Secular American Music <18th Century>. The Library of Congress, Music division, 1945.