Njoku, B. C. (1984). The four novels of Chinua Achebe: A critical study. Peter Lang.
Chicago-čujuhus (17. p.)Njoku, Benedict Chiaka. The Four Novels of Chinua Achebe: A Critical Study. New York: Peter Lang, 1984.
MLA-čujuhus (9. p.)Njoku, Benedict Chiaka. The Four Novels of Chinua Achebe: A Critical Study. Peter Lang, 1984.
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