Harris, Cyril M., author
W.W. Norton, 1998
Buku Referensi
Biegel, Stuart, author
Thomson West, 2012
Buku Teks
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