Nicholson, Michael
Cambridge University Press, 1989
Buku Teks SO
Douherty, James E.
J.B. Lippincott, 1971
Buku Teks SO
Chilcote, Ronald H.
Routledge, 2000
eBooks
edited by M.G. Quibria
Published for the Asian Develoment Bank by Oxford University Press, 1995
Buku Teks SO
Tim Dunne
Oxford University Press, 2010
Buku Teks SO