Addison-Wesley, 1976
Buku Teks
Fasulo, Linda M.
Praeger Special Studies, 1984
Buku Teks
Bryson, Bill, author
Broadway Books, 2000
Buku Teks
Lubis, Mochtar, 1922-2004, author
Gapura, 1952
Buku Teks
Birdsall, Stephen S., author
John Wiley & Sons, 1992
Buku Teks