Allen L. Hammond [and others]
Oxford University Press , 1996
Buku Teks
Hough, Michael
Routledge, 1995
Buku Teks
Riley E. Dunlap ... et all, editor
Rowman & Littlefield Publishers, INC, 2001
Buku Teks
Farhanah Aleyda Giri
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2023
UI - Skripsi Membership
Mercer, Charles
Penguin Books, 1975
Buku Teks