Cita APA (7th ed.)
Herdeg, W. Graphis: International Journal of Graphic Art and Applied Art : vol. 30, no. 171-176, 1974-1975. Walter Herdeg.
Cita Chicago (17th ed.)
Herdeg, Walter. Graphis: International Journal of Graphic Art and Applied Art : Vol. 30, No. 171-176, 1974-1975. Zúrich, Suiza: Walter Herdeg.
Cita MLA (9th ed.)
Herdeg, Walter. Graphis: International Journal of Graphic Art and Applied Art : Vol. 30, No. 171-176, 1974-1975. Walter Herdeg.
Atenció: Aquestes cites poden no estar 100% correctes.