APA (7th ed.) Citation

Bühler-Oppenheim, K., & Mülhaupt, A. (1971). Zeichen, Marken, Zinken. Niggli.

Chicago Style (17th ed.) Citation

Bühler-Oppenheim, Kristin, and André Mülhaupt. Zeichen, Marken, Zinken. Teufen: Niggli, 1971.

MLA (8th ed.) Citation

Bühler-Oppenheim, Kristin, and André Mülhaupt. Zeichen, Marken, Zinken. Niggli, 1971.

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