APA (7th ed.) Citation

Borris, S. (1948). Praktische Harmonielehre. Sirius.

Chicago Style (17th ed.) Citation

Borris, Siegfried. Praktische Harmonielehre. Berlin: Sirius, 1948.

MLA (9th ed.) Citation

Borris, Siegfried. Praktische Harmonielehre. Sirius, 1948.

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