APA (7th ed.) Citation

Thompson, J. (2015). Adult preparatory piano course. Willis Music.

Chicago Style (17th ed.) Citation

Thompson, John. Adult Preparatory Piano Course. Wisconsin, Estados Unidos: Willis Music, 2015.

MLA (9th ed.) Citation

Thompson, John. Adult Preparatory Piano Course. Willis Music, 2015.

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