Lawrence, Mark Atwood
Oxford University Press, 2010
Buku Teks
edited by Andreas W. Daum, Lloyd C. Gardner, Wilfried Mausbach
Cambridge University Presss, 2003
Buku Teks
Appy, Christian G.
Penguin, 2016
Buku Teks
Muhammad Ammar Zuhdi
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2022
UI - Tugas Akhir
Salisbury, Harrison E.
Harper & Row, 1967
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