Gaya APA

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

Gaya MLA

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