APA (7th ed.) Citation

Müller, H., Pietzker, F., & Kullrich, E. Rechenbuch. Teubner.

Chicago Style (17th ed.) Citation

Müller, Heinrich, Friedrich Pietzker, and Ernst Kullrich. Rechenbuch. Leipzig [u.a.]: Teubner.

MLA (8th ed.) Citation

Müller, Heinrich, et al. Rechenbuch. Teubner.