Moore, David S.
WH. Freeman and Company, 2000
Multimedia
Kaplan, Robert M., author
Allyn and Bacon , 1987
Buku Teks
Smith, Frank C., author
Richard D. Irwin, 1960
Buku Teks
Moore, David S.
W.H. Freeman and Company, 2000
Buku Teks
Adkins, Dorothy C., author
Charles E. Merrill Books , 1964
Buku Teks