APA (7e ed.) Bronvermelding

Hilley, M., & Olson, L. F. (2002). Piano for pleasure: A basic course for adults (4th ed.). Schirmer/Cengage.

Chicago (17e ed.) Bronvermelding

Hilley, Martha, en Lynn Freeman Olson. Piano for Pleasure: A Basic Course for Adults. 4th ed. Boston, Mass: Schirmer/Cengage, 2002.

MLA (9e ed.) Bronvermelding

Hilley, Martha, en Lynn Freeman Olson. Piano for Pleasure: A Basic Course for Adults. 4th ed. Schirmer/Cengage, 2002.