Graphis posters 87; the international annual of posters art.

MLA

Herdeg, W, and B.M Pedersen. Graphis Posters 87; the International Annual of Posters Art. Zürich: Graphis, 1987.

APA

Herdeg, W., & Pedersen, B. (1987). Graphis posters 87; the international annual of posters art. Zürich: Graphis.

Chicago

Herdeg, W., and B.M Pedersen. Graphis Posters 87; the International Annual of Posters Art. Zürich: Graphis, 1987.