Langer, William L., author
Harper Torchbooks, 1969
Buku Teks
Stearns, Peter N., author
Macmillan, 1967
Buku Teks
Sadangi, Chandan Kumar, author
Emerald, 2017
eBooks
Faishal Hilmy Maulida, author
2018
UI - Tesis (Membership)
Kissinger, Henry, 1923-, author
Simon & Schuster Trade Paperbacks, 2011
Buku Teks