Keesing, Roger M., author
Holt, Rinchart and Winston, 1971
Buku Teks
Nuland, Sherwin B.
Simon & Schuster, 2000
Buku Teks
Juan, Stephen, author
Gramedia , 2005
Buku Teks
edited by Robert Dickinson ... [and others]
Cambridge University Press, 2012
Buku Teks
Mannix, Darlene, author
Jossey-Bass , 2009
Buku Teks