edited by Morton Borden
Rand McNally, 1961
Buku Teks
Simon & Schuster, 1995
Buku Teks
ediyed by Joel H. Silbey
Wiley-Blackwell, 2014
Buku Teks
editor, Henry F. Graff
Charles Scribner's Sons , 1996
Buku Referensi
Kim, Chong Nam, author
Esatbridge, 2007
Buku Teks