Ewen, Dale, author
Pearson Prentice-Hall, 2009
Buku Teks
Pollack, Herman W., author
Prentice-Hall, 1964
Buku Teks
Robertson, Barry C.
John Wiley & Sons, 1981
Buku Teks
Tata McGraw-Hill, 1990
Buku Teks
Walker, James S., author
Addison-Wesley, 2010
Buku Teks