Atkinson, Brian, author
Addison - Wesley , 1998
Buku Teks
Coppock, Joseph D., author
McGraw-Hill, 1959
Buku Teks
Ferrell, O.C., author
Cengage Learning, 2015
Buku Teks
Maidment, Frederick, author
Prentice-Hall, 1999
Buku Teks
Maidment, Frederick, author
Prentice-Hall, 2000
Buku Teks