Russky Yazyk Publishers, 1994
Buku Referensi
Nelson, Andrew Nathaniel, author
Charles E . Tuttle, 1966 ; 1986
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Wood, James, author
Warner , 1958
Buku Referensi
Weekley, Ernest, author
Dover Publications, 1967
Buku Referensi
general editor, David W. Pearce
Macmillan Reference Books, 1989
Buku Referensi