APA (7th ed.) Citation

Barabas, H., & Ratzka, J. Rock- & Pop-Klavier. Barabas & Ratzka.

Chicago Style (17th ed.) Citation

Barabas, Helge, and Johanna Ratzka. Rock- & Pop-Klavier. Mainbernheim: Barabas & Ratzka.

MLA (9th ed.) Citation

Barabas, Helge, and Johanna Ratzka. Rock- & Pop-Klavier. Barabas & Ratzka.

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