Pape, H. Object and final cause in Peirce's semeiotic: Helmut Pape. Peirce's doctrine of signs : theory, applications, and connections.(1996).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPape, Helmut. "Object and Final Cause in Peirce's Semeiotic: Helmut Pape." Peirce's Doctrine of Signs : Theory, Applications, and Connections.(1996) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रPape, Helmut. "Object and Final Cause in Peirce's Semeiotic: Helmut Pape." Peirce's Doctrine of Signs : Theory, Applications, and Connections.(1996), .
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