Krampen, M. Semiotics of objects revisited: Martin Krampen. Advances in visual semiotics : the Semiotic Web 1992 - 93.(1995).
Lua i Stíl Chicago (17ú heag.)Krampen, Martin. "Semiotics of Objects Revisited: Martin Krampen." Advances in Visual Semiotics : The Semiotic Web 1992 - 93.(1995) .
Lua MLA (8ú heag.)Krampen, Martin. "Semiotics of Objects Revisited: Martin Krampen." Advances in Visual Semiotics : The Semiotic Web 1992 - 93.(1995), .
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