Crow, D. (2003). Visible signs: An introduction to semiotics for art and design students / David Crow. AVA.
Lua i Stíl Chicago (17ú heag.)Crow, David. Visible Signs: An Introduction to Semiotics for Art and Design Students / David Crow. Worthing: AVA, 2003.
Lua MLA (8ú heag.)Crow, David. Visible Signs: An Introduction to Semiotics for Art and Design Students / David Crow. AVA, 2003.
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