Park, William R.
Construction bidding for proft
John Wiley & Sons, 1979
 Buku Teks
Lewis, Jack R.
Construction specifications
Prentice-Hall, 1975
 Buku Teks SO
Clough, Richard Hudson
Construction contracting
John Wiley & Sons, 1986
 Buku Teks SO
Manual of steel construction
American Institute of Steel Construction.
American Institute of Steel Construction, 1992
 Buku Referensi
Traister, John E.
Electrical specifications for building construction
Prentice-Hall, 1978
 Buku Teks