Curtis, B. (2009). Drawing from observation: An introduction to perceptual drawing (2nd ed.). McGraw-Hill.
Čikaški stil citiranja (17. izdanje)Curtis, Brian. Drawing from Observation: An Introduction to Perceptual Drawing. 2nd ed. Boston: McGraw-Hill, 2009.
MLA način citiranja (9. izdanje)Curtis, Brian. Drawing from Observation: An Introduction to Perceptual Drawing. 2nd ed. McGraw-Hill, 2009.
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