McAllister, David
Aldershot Averbury, 1992
Buku Teks
Routledge, 2017
eBooks
Kuxnetsov, Amatoly
Moscow Foreign Languages Publishing House 1959
Buku Teks
Mohammad Fadil Imran
Universitas Indonesia, 2014
UI - Disertasi (Membership)
edited by Eric Cullen, Lawrence Jones, Roland Woodward
John Wiley & Sons, 1997
Buku Teks