Lua APA (7ú heag.)

Zeegen, L. (2009). What is illustration?: Essential design handbooks. RotoVision SA.

Lua i Stíl Chicago (17ú heag.)

Zeegen, Lawrence. What Is Illustration?: Essential Design Handbooks. UK: RotoVision SA, 2009.

Lua MLA (9ú heag.)

Zeegen, Lawrence. What Is Illustration?: Essential Design Handbooks. RotoVision SA, 2009.

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