Inter-Parliamentary Union
Facts on File Publications, 1986
Buku Referensi
editor in-chief, Joel H. Silbey
Charles Scribner`s Sons, Legislative bodies
Buku Referensi
editor in-chief, Joel H. Silbey
Charles Scribner`s Sons, 1994
Buku Referensi
editor in-chief, Joel H. Silbey
Charles Scribner`s Sons, 1994
Buku Referensi
Duke Univ. Press, 1979
Buku Teks