Electoral systems: paradoxes, assumptions, and procedures
Dan S. Felsenthal, Moshe Machover, editors
[Springer, Springer], 2012
 eBooks
Systems planning and design : case studies in modeling, optimization, and evaluation
edited by Richard De Neufville and David Marks
Prentice-Hall, 1974
 Buku Teks SO
Katz, Richard S.
A Theory of parties and electoral systems / Richard S. Katz
The John Hopkins University Press , 1980
 Buku Teks SO
Lijphart, Arend
Electoral systems and party systems : a study of twenty-seven democracies, 1945-1990
Oxford University Press, 1994
 Buku Teks SO
Pike, Ralph W., 1935-
Optimization for engineering systems
Van Nostrand Reinhold, 1986
 Buku Teks SO