Jan van Eijck, editor
[, Springer-Verlag], 2012
eBooks
Carnap, Rudolf, author
Dover Publications, 1958
Buku Teks
Blalock, Hubert M., author
Prentice-Hall, 1969
Buku Teks
Kirkpatrick, Graeme, 1963-, author
Polity Press, 2013
Buku Teks
Standley, Gerald B., author
Houghton Mifflin, 1971
Buku Teks