Palmer, Brandon, author
University of Washington Press , 2013
Buku Teks
Karp, Walter, author
Harper & Row, 1979
Buku Teks
Cambridge University Press, 2015
Buku Teks
Auwjong, Peng Koen, author
Kompas, 2008
Buku Teks
Strategicus
Faber and Faber Limited, 1944
Buku Klasik