Shillinglaw, Gordon
Richard D. Irwin, 1989
Buku Teks SO
Rankine, Graeme W.
Prentice-Hall, 1993
Buku Teks SO
South-Western , 2005
Buku Teks
Pyle, William W.
Richard D. Irwin, 1980
Buku Teks
Kochanek, Richard F.
Harcourt Brace Jovanovich, 1990
Buku Teks