Trix + Robert Haussmann.

MLA

Fischli, Fredi, and Niels Olsen. Trix + Robert Haussmann. 3e ed. Zürich: STUDIOLO : Edition Patrick Frey, 2019.

APA

Fischli, F., & Olsen, N. (2019). Trix + Robert Haussmann. 3e ed. Zürich: STUDIOLO : Edition Patrick Frey.

Chicago

Fischli, Fredi, and Niels Olsen. Trix + Robert Haussmann. 3e ed. Zürich: STUDIOLO : Edition Patrick Frey, 2019.