Brug, F. H. van der
Kluwer Academic Publishers, 1973
Buku Teks
Albrecht, Max of Haarlem
Arbeiderspers, 1960
Buku Teks
Niskanen, William A.
Aldine - Atherton, 1971
Buku Teks
Pitkin, Hanna Fenichel
University of California Press, 1967
Buku Teks
edited by Guillermo O`Donnell, Philippe C. Schmitter, and Laurence Whitehead
LP3ES , 1993
Buku Teks