Libby, Robert
Irwin /McGraw-Hill, 1998
Buku Teks
Thomas R Robinson, Elaine Henry, Wendy L. Pirie, Michael A. Broihahn, Anthony T. Cope
John Wiley & Son, 2012
Buku Teks
Ferris, Kenneth R.
Richard D. Irwin, 1990
Buku Teks
Bukics, Rose Marie L.
S.l. Probus Publishing , 1991
Buku Teks
Spiller, Earl A.
Homewood, Illinois , Richard D. Irwin
Buku Teks