Heimann, Eduard
Charles Scribner`s Sons, 1947
Buku Teks
Hurst, James Willard
The University of Wisconsin Press, 1956
Buku Teks
Ryand, author
2014
UI - Skripsi (Membership)
Thomas Risse, author
Cambridge University Press, 2013
eBooks
Mochammad Ryanindityo, author
Fakultas Pascasarjana Universitas Indonesia, 2014
UI - Tesis (Membership)