Getz, Wayne M., author
Princeton University Press, 1989
Buku Teks
Rogers, Andrei
Sage Publications, 1985
Buku Teks
Waltman, Paul, author
Society for Industrial and Applied Mathematics, 1983
eBooks
Brauer, Fred, author
Springer Science, 2012
eBooks
edited by Gavin W. Jones and Terence H. Hull
Institute od Southeast Asia Studies (ISEAS), 1997
Buku Teks