Warren, Stuart
Gadjah Mada University Press, 1994
Buku Teks
Taylor and Francis, 2000
Buku Teks
Cassidy, Harold G.
Freeman, Cooper & Company , 1970
Buku Teks
Beiser, Arthur
McGraw-Hill, 1964
Buku Teks
Berry, R. Stephen
John Wiley & Sons, 1980
Buku Teks