Kramer, Dale, author
Cambridge University Press, 1991
Buku Teks
Hardy, Thomas, 1840-1928, author
Everyman's Library, 1991
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Macmillan, 1986
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Cahyawati, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1991
UI - Skripsi (Membership)
George Thomas,jr, MauriceD Weir, Joel Hass, Christhopher Heil
Penerbit Erlangga, 2017
Buku Teks