APA

United States of America. Library of Congress of Washington, Gregory J. & Sonneck O. G. T. 1.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: .

Chicago

United States of America. Library of Congress of Washington, Gregory Julia and Sonneck Oscar George Theodore 1873-1928.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: .

Harvard

United States of America. Library of Congress of Washington, Gregory J. and Sonneck O. G. T. 1.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: .

MLA

United States of America. Library of Congress of Washington, Gregory Julia and Sonneck Oscar George Theodore 1873-1928.Washington : Government Printing Office, 1913: . .