Gaya APA

Herdeg, W., Swanson, C, P. (1973). Graphis annual 73-74 . Zurich: Zurich: Graphic Press; 1973.

Gaya MLA

Herdeg, Walter., Swanson, Carl, P.. "Graphis annual 73-74". Zurich: Zurich: Graphic Press; 1973, 1973. Text.