Boone, Louis E., author
Prentice-Hall, 1997
Buku Teks
edited by Joel J. Lersier
Englewood Cliffs, N.J., Prentice-Hall
Buku Teks
CRC press, 2021
eBooks
Jackson, John H., author
Prentice-Hall, 1992
Buku Teks
Zura Akhmad Fakhrurrozi, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2017
UI - Makalah dan Kertas Kerja