Davis, R. C., & Schleifer, R. Oklahoma project for discourse and theory. Univ. of Oklahoma Press.
Lua i Stíl Chicago (17ú heag.)Davis, Robert Con, agus Ronald Schleifer. Oklahoma Project for Discourse and Theory. Norman: Univ. of Oklahoma Press.
Lua MLA (8ú heag.)Davis, Robert Con, agus Ronald Schleifer. Oklahoma Project for Discourse and Theory. Univ. of Oklahoma Press.
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