APA (7th ed.) Citation

SEGOVIA, A., & Sor, F. (1945). Twenty Studies for The Guitar by Fernando Sor. Edward B. Marks Music Corp.

Chicago Style (17th ed.) Citation

SEGOVIA, Andres, and Fernando Sor. Twenty Studies for The Guitar by Fernando Sor. Edward B. Marks Music Corp, 1945.

MLA (8th ed.) Citation

SEGOVIA, Andres, and Fernando Sor. Twenty Studies for The Guitar by Fernando Sor. Edward B. Marks Music Corp, 1945.

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