3D : : past and present.

MLA

van Keulen, Wim. 3d : Past and Present. Borger: 3-D Book Productions, 1980.

APA

van Keulen, W. (1980). 3D : past and present. Borger: 3-D Book Productions.

Chicago

van Keulen, Wim 3D: Past and Present. Borger: 3-D Book Productions, 1980.