Jim Mcgoldrick, editor
Routledge, 2001
Buku Teks
PWN-Polish Scientiic Publishers, 1968
Buku Teks
Institute of Public Administration , 1965
Buku Teks
Nusa Putra, author
RajaGrafindo Persada, 2012
Buku Teks
Hesseling, P. G. M.
Pergamon Press, 1982
Buku Teks