APA (7th ed.) Citation

Jank, W., Gies, S., & Schmidt-Oberländer, G. (2015). Music step by step. Helbling.

Chicago Style (17th ed.) Citation

Jank, Werner, Stefan Gies, and Gero Schmidt-Oberländer. Music Step by Step. Innsbruck ; Esslingen ; Bern-Belp: Helbling, 2015.

MLA (9th ed.) Citation

Jank, Werner, et al. Music Step by Step. Helbling, 2015.