Myers, Bernard S., author
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Buku Teks
Grosser, Maurice, author
Charter Books, 1964
Buku Teks
Lewis, Oscar, author
Random Hause, 1961
Buku Teks
Henry, Robert Selph
Bobbs-Merrill, 1950.
Buku Teks
Marcucci, Luisa, author
Studio Books , 1960
Buku Referensi