APA (7th ed.) Citation

Louis, R., & Thuille, L. Harmonielehre. Grüninger.

Chicago Style (17th ed.) Citation

Louis, Rudolf, and Ludwig Thuille. Harmonielehre. Stuttgart: Grüninger.

MLA (9th ed.) Citation

Louis, Rudolf, and Ludwig Thuille. Harmonielehre. Grüninger.

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