Christian, Gary D.
John Wiley & Sons, 1977
Buku Teks
Christian, Gary D.
John Wiley & Sons, 1994
Buku Teks
Christian, Gary D.
John Wiley & Sons, 1986
Buku Teks
Dick, J.G.
McGraw-Hill, 1973
Buku Teks
Miller, James N.
Pearson Prentice Hall, 2005
Buku Teks