Cita APA (7th ed.)

Barlow, H., & Morgenstern, S. (1950). A dictionary of opera and song themes, including cantatas, oratorios, lieder, and art songs. Crown Pub.

Cita Chicago (17th ed.)

Barlow, Harold, i Sam Morgenstern. A Dictionary of Opera and Song Themes, Including Cantatas, Oratorios, Lieder, and Art Songs. New York: Crown Pub, 1950.

Cita MLA (9th ed.)

Barlow, Harold, i Sam Morgenstern. A Dictionary of Opera and Song Themes, Including Cantatas, Oratorios, Lieder, and Art Songs. Crown Pub, 1950.