Copstead, Lee-Ellen C., author
W.B. Saunders , 2000
Buku Teks
Frank, Robert H., author
McGraw-Hill/Irwin, 2004
Buku Teks
Dewar, Diane M., author
Jones & Bartlett Learning, 2011
Buku Teks
Henderson, Glenn V., author
Addison-Wesley, 1984
Buku Teks
Enger, Eldon D., author
McGraw-Hill, 2003
Buku Teks