Graphis design 91; the international annual on design and illustration.

MLA

Herdeg, W, and B.M Pedersen. Graphis Design 91; the International Annual On Design and Illustration. Zürich: Graphis Press, 1991.

APA

Herdeg, W., & Pedersen, B. (1991). Graphis design 91; the international annual on design and illustration. Zürich: Graphis Press.

Chicago

Herdeg, W., and B.M Pedersen. Graphis Design 91; the International Annual On Design and Illustration. Zürich: Graphis Press, 1991.