Levy, Haim, author
Prentice-Hall, 1988
Buku Teks
Arthur J Keown
Pearson : Prentice Hall, [2005, 2005]
Buku Teks
Gup, Benton E., author
John Wiley and Sons, 1987
Buku Teks
by Arthur J. Keown, John D. Martin, J. William Petty, and David F. Scott
Prentice-Hall, 2005
Buku Teks
Curran, Ward S.
McGraw-Hill, 1970
Buku Teks