Durrell, Gerald, foreword
The Viking Press 1972,
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Fraser, George Sutherland, 1915-
Grove Press, 1961
Buku Teks SO
Durrell, Gerald, foreword
William Collins, 1983
Buku Teks SO
Nuria Widyasari
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2002
UI - Tesis Membership
Durrell, Gerald, foreword
William Collins Sons, 1981
Buku Teks SO