Ballast, David Kent, author
McGraw-Hill, 1994
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Considine, Douglas M., editor
McGraw-Hill, 1964
Buku Referensi
Lewis, Bernnard T., author
McGraw-Hill, 1999
Buku Referensi
Buchheim, Robert W., author
Random House, 1959
Buku Referensi
Christensen, James J., author
Wiley, 1988
Buku Referensi