Ritz, George J., author
McGraw-Hill, 1994
Buku Teks
Ritz, George J., author
New York: McGraw-Hill, 1990
Buku Teks
Clough, Richard Hudson, author
John Wiley & Sons, c1991
Buku Teks
Levy, Sidney M., author
McGraw-Hill , 2002
Buku Teks
Oberlender, Garold D., author
McGraw-Hill, 1993
Buku Teks