Butler, Stuart Thomas
Horwitz-Grahame, 1962
Buku Teks
Butler, Stuart Thomas
Horwitz-Grahame, 1961
Buku Teks
Beiser, Arthur
McGraw-Hill, 1964
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Wendy Brown ... [and others] ; edited by Jonathan Ling
Longman Singapore Publishers, 1995
Buku Teks
Cromer, Alan H.
McGraw-Hill, 1974
Buku Teks