Gaya APA

Swanson, C, P., Herdeg, W. (1973). Graphis annual 76-77 . Zurich: Zurich: Graphic Press; 1973.

Gaya MLA

Swanson, Carl, P.., Herdeg, Walter. "Graphis annual 76-77". Zurich: Zurich: Graphic Press; 1973, 1973. Text.