Johnson, Alvin S.
Rineka Cipta, 2004
Buku Teks
Carlston, Kenneth S.
Columbia University Press, 1956
Buku Teks
Hall, Jerome
Lousiana State University Press, 1963
Buku Teks
Croce, Mariano
Springer Science, 2012
eBooks
Unger, Roberto Mangabeira
Free Press, 1976
Buku Teks