Rogers, Andrei
Sage, 1985
Buku Teks
Waltman, Paul
Society for Industrial and Applied Mathematics, 1983
eBooks
Brauer, Fred
Springer Science, 2012
eBooks
edited by Gavin W. Jones and Terence H. Hull
Institute od Southeast Asia Studies (ISEAS), 1997
Buku Teks
edited by Stuart Mudd
Indiana University Press , 1964
Buku Teks SO