Salanie, Bernard
The Plit Press, 1997
Buku Teks
Hamilton, David
Random House, 1968
Buku Teks
Herber, Bernard P.
Richard D. Irwin, Inc, 1971
Buku Teks
Schmitt, Bernard A.
Westview Press, 1979
Buku Teks
Cook, Peter, 1936
Academy Editions, 1996
Buku Teks SO