edited by Harriet H. Werley, Joyce J. Fitzpatrick, Roma Lee Taunton
Springer, 1986
Buku Teks SO
edited by R. Mark Isaac
JAI Press, 1992
Buku Teks SO
Ferguson, John Alexander
National Library of Australia, 1977
Buku Referensi
editor in chief, Seymour Martin Lipset
Routledge, 1995
Buku Referensi
selected and introduced by Roy Harris
Routledge/Thoemmes Press, 1995
Buku Referensi