Landa, R. (2011). Graphic design solutions (4th ed.). Wadsworth/Cengage Learning.
Chicago-viite (17. p.)Landa, Robin. Graphic Design Solutions. 4th ed. Boston, Mass: Wadsworth/Cengage Learning, 2011.
MLA-viite (9. p.)Landa, Robin. Graphic Design Solutions. 4th ed. Wadsworth/Cengage Learning, 2011.
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