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West Group, 1995
Buku Teks
El-Agraa, Ali M, author
Prentice-Hall, 2001
Buku Teks
Thody, Philip, author
Routledge , 1997
Buku Teks
Murray, Fiona
T.M.C. Asser Press, 2012
eBooks
Dimas Yudhistira Henuhili, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2021
UI - Tugas Akhir