Aigner, Dennis J., author
Macmillan, 1968
Buku Teks
Bissell, Derek, author
Chapman & Hall, 1994
Buku Teks SO
Miller, Rupert G., author
McGraw-Hill , 1966
Buku Teks
Huntsberger, David V., author
Allyn and Bacon, 1967
Buku Teks SO
Arkin, Herbert
N.Y. Barnes & Noble, Inc. , 1938
Buku Teks