Hayes, C. (1981). A practical guide to landscape painting. Watson-Guptill.
Lua i Stíl Chicago (17ú heag.)Hayes, Colin. A Practical Guide to Landscape Painting. New York: Watson-Guptill, 1981.
Lua MLA (9ú heag.)Hayes, Colin. A Practical Guide to Landscape Painting. Watson-Guptill, 1981.
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