Fransman, Martin, author
Cambridge University Press, 1991
Buku Teks
Phister, Montgomery, 1926-, author
The Santa Monica , 1975
Buku Teks
edited by Fred Gruenberger
Prentice-Hall, 1971
Buku Teks
Aditya Reynaldi, author
2017
UI - Skripsi (Membership)
Nelson, Richard R., author
American Enterprise Institute for Public Policy Research, 1984
Buku Teks