Cita APA (7th ed.)

Shopenhauer, A., Runge, P. O., & Stahl, G. (2010). On vision and colors: And Color Sphere by Philipp Otto Runge (1st. ed.). Princeton Architectural Press.

Cita Chicago (17th ed.)

Shopenhauer, Arthur, Philipp Otto Runge, i Georg Stahl. On Vision and Colors: And Color Sphere by Philipp Otto Runge. 1st. ed. New York, USA: Princeton Architectural Press, 2010.

Cita MLA (9th ed.)

Shopenhauer, Arthur, et al. On Vision and Colors: And Color Sphere by Philipp Otto Runge. 1st. ed. Princeton Architectural Press, 2010.