Okolo, B. A. Indirectness in discourse: A study in paradoxical communication among the Igbos / Bertram A. Okolo. The language of African literature.(1998).
Čikaški stil citiranja (17. izdanje)Okolo, Bertram A. "Indirectness in Discourse: A Study in Paradoxical Communication Among the Igbos / Bertram A. Okolo." The Language of African Literature.(1998) .
MLA način citiranja (8. izdanje)Okolo, Bertram A. "Indirectness in Discourse: A Study in Paradoxical Communication Among the Igbos / Bertram A. Okolo." The Language of African Literature.(1998), .
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