APA (7th ed.) Citation

Whelpley, B., & Boyer, H. (1903). I know a hill, op.7, no.1. Boston Music.

Chicago Style (17th ed.) Citation

Whelpley, Benjamin, and Harriet Boyer. I Know a Hill, Op.7, No.1. Boston: Boston Music, 1903.

MLA (9th ed.) Citation

Whelpley, Benjamin, and Harriet Boyer. I Know a Hill, Op.7, No.1. Boston Music, 1903.