Lawrence, David Herbert, 1885-1930
City Doubleday, 1954
Buku Teks
Clarke, Harold D.
McGraw-Hill Ryerson, 1980
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Miles, Lawrence D.
McGraw-Hill Publishing, 1972
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Brainerd, Walter S.
John Wiley & Sons, 1974
Buku Teks
Sri Saraswati
Faculty of Humanities University of Indonesia, 2009
Artikel Jurnal