Alliluyeva, S. (1967). Twenty letters to a friend. London: Penguin Books.
Trích dẫn kiểu ChicagoAlliluyeva, Svetlana. Twenty Letters to a Friend. London: Penguin Books, 1967.
MLA CitationAlliluyeva, Svetlana. Twenty Letters to a Friend. London: Penguin Books, 1967.
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