Fish, Edward R., author
Pearson-Prentice Hall, 2006
Buku Teks
Fisk, Edward R., author
Prentice-Hall, 1997
Buku Teks
Clough, Richard Hudson, author
John Wiley & Sons, c1991
Buku Teks
Levy, Sidney M., author
McGraw-Hill , 2002
Buku Teks
Ritz, George J., author
McGraw-Hill, 1994
Buku Teks