Steinbeck, J. (2006). The Grapes of wrath. New York: Penguin Books.
Trích dẫn kiểu ChicagoSteinbeck, John. The Grapes of Wrath. New York: Penguin Books, 2006.
MLA citiranjeSteinbeck, John. The Grapes of Wrath. New York: Penguin Books, 2006.
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