Funk, Arthur Layton
Norman University of Oklahoma Press, 1959
Buku Teks
Alvin Adityo, author
Universitas Indonesia, 2019
UI - Tugas Akhir
Rougier, Louis, author
Beauchemin, 1945
Buku Teks
Pickles, Dorothy Maud
ssued under the auspices of the Royal Institute of International Affairs (by) Oxford U.P, 1966
Buku Teks
Steinberg, Jonathan, author
Routlegde, 1991
Buku Teks