Stair, Ralph M., Jr., author
Boyd & Fraser Publishing, 1992
Buku Teks
Lundeberg, Mats, author
Prentice-Hall, 1981
Buku Teks
O`Brien, James A., 1936-, author
McGraw-Hill, 2002
Buku Teks
O`Brien, James A., 1936-, author
McGraw-Hill , 1999
Buku Teks
O`Brien, James A., 1936-, author
McGraw-Hill/Irwin, 2004
Buku Teks