Dudley Herron J. .......(et al.)
D.C. Heath and Company, 2001
Buku Teks
Sienko, Michell J.
McGraw-Hill Kogakusha, 1961
Buku Teks
Busch, Daryle H.
Allyn and Bacon , 1978
Buku Teks
Busch, Daryle H.
Allyn and Bacon, 1973
Buku Teks
Moore, John W.
McGraw-Hill, 1987
Buku Teks