Forum 1981 : Forum Design 1981.

MLA

Forum 1981 : Forum Design 1981. Middelburg: Stichting Forum, 1981.

APA

(1981). Forum 1981 : Forum Design 1981. Middelburg: Stichting Forum.

Chicago

Forum 1981: Forum Design 1981. Middelburg: Stichting Forum, 1981.