APA (7th ed.) Citation

Duarte, J. W. (1966). Six friendships: For two guitars. Novello & Company.

Chicago Style (17th ed.) Citation

Duarte, John W. Six Friendships: For Two Guitars. [London, England]: Novello & Company, 1966.

MLA (9th ed.) Citation

Duarte, John W. Six Friendships: For Two Guitars. Novello & Company, 1966.

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