APA (7th ed.) Citation

Barber, S. (1945). Excursions: For the piano [Op. 20]. G. Schirmer.

Chicago Style (17th ed.) Citation

Barber, Samuel. Excursions: For the Piano [Op. 20]. New York: G. Schirmer, 1945.

MLA (9th ed.) Citation

Barber, Samuel. Excursions: For the Piano [Op. 20]. G. Schirmer, 1945.