Buttle, Francis, author
Bayumedia Publishing, 2007
Buku Teks
Hendi Herdiansyah, author
2017
UI - Skripsi (Membership)
Still, Richard R
Prentice Hall International, 1988
Buku Teks
Jones, John G., author
Alexander Hamilton Institute, 1961
Buku Teks
Manik, Herna, auhtor
2016
UI - Tesis (Membership)