United States of America. Library of Congress of Washington, Gregory, J., & Sonneck, O. G. T. Catalogue of early books on music (before 1800) / by Julia Gregory of the catalogue division ; prepared under the direction of O. G. Sonneck chef of the division of music.
Cita Chicago Style (17a ed.)United States of America. Library of Congress of Washington, Julia Gregory, y Oscar George Theodore Sonneck. Catalogue of Early Books on Music (before 1800) / by Julia Gregory of the Catalogue Division ; Prepared Under the Direction of O. G. Sonneck Chef of the Division of Music. Washington : Government Printing Office, 1913.
Cita MLA (8a ed.)United States of America. Library of Congress of Washington, et al. Catalogue of Early Books on Music (before 1800) / by Julia Gregory of the Catalogue Division ; Prepared Under the Direction of O. G. Sonneck Chef of the Division of Music.