Elgin, C. Z. Index and icon revisited: Catherine Z. Elgin. Peirce's doctrine of signs : theory, applications, and connections.(1996).
Lua i Stíl Chicago (17ú heag.)Elgin, Catherine Z. "Index and Icon Revisited: Catherine Z. Elgin." Peirce's Doctrine of Signs : Theory, Applications, and Connections.(1996) .
Lua MLA (8ú heag.)Elgin, Catherine Z. "Index and Icon Revisited: Catherine Z. Elgin." Peirce's Doctrine of Signs : Theory, Applications, and Connections.(1996), .
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