Vercellis, Carlo, author
John Wiley & Sons, 2009
Buku Teks
Rowe, Alan J., author
Macmillan, 1992
Buku Teks
Ferrell, O.C., author
Cengage Learning, 2015
Buku Teks
Folsom, Marison B., author
McGraw-Hill, 1962
Buku Teks
Maidment, Frederick, author
Prentice-Hall, 1999
Buku Teks