Brinker, Russell C.
International Textbook, 1965
Buku Teks
Permadi Soemarahatianto
UI-Press , 2001
Buku Teks
Roberts, Jack
Delmar, 1995
Buku Teks
Tatat Sutarman Abdullah
Penebar Swadaya, 1996
Buku Teks
McEntyre, John G.
John Wiley & Sons, 1978
Buku Teks