Brooks, Frederick P. Jr., author
John Wiley & Sons, 1969
Buku Teks
Middleton, Robert Gordon, 1908-, author
Prentice-Hall, 1985
Buku Referensi
Clark, Frank J., author
Prentice-Hall, 1972
Buku Teks
Lord, Kenniston W., author
Van Nostrand Reinhold, 1978
Buku Teks
Inmon, W.H., author
Prentice-Hall, 1983
Buku Teks