Freund, John E.
Pearson Prentice Hall, 2007
Buku Teks
Freund, John E.
Prentice-Hall, 1980
Buku Teks
Freund, John E.
Prentice-Hall, 1984
Buku Teks
Hamburg, Morris
Harcourt Brace Javanovich , 1974
Buku Teks
McClave, James T.
Prentice-Hall, 2000
Buku Teks