Shopenhauer, A., Runge, P. O., & Stahl, G. (2010). On vision and colors: And Color Sphere by Philipp Otto Runge (1st. ed.). Princeton Architectural Press.
Citace podle Chicago (17th ed.)Shopenhauer, Arthur, Philipp Otto Runge, a Georg Stahl. On Vision and Colors: And Color Sphere by Philipp Otto Runge. 1st. ed. New York, USA: Princeton Architectural Press, 2010.
Citace podle MLA (9th ed.)Shopenhauer, Arthur, et al. On Vision and Colors: And Color Sphere by Philipp Otto Runge. 1st. ed. Princeton Architectural Press, 2010.
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