Gaya APA

Swanson, C, P., Herdeg, W. (1975). Graphis annual 75-76 . Zurich: Zurich: Graphic Press; 1975.

Gaya MLA

Swanson, Carl, P.., Herdeg, Walter. "Graphis annual 75-76". Zurich: Zurich: Graphic Press; 1975, 1975. Text.