Hutty, Roger, author
Erlangga, 1988
Buku Teks
Kuester, James L., author
McGraw-Hill , 1973
Buku Teks
Suprayitno Munadi, author
Andi, 1990
Buku Teks
McCracken, Daniel D., author
John Wiley & Sons, 1974
Buku Referensi
Hammond, Robert H., author
McGraw-Hill, 1983
Buku Teks