Congress of the United States, O. o. T. A. (1988). SDI: Technology survivability and software. Washington: D.C. : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O..
Dyfyniad Arddull ChicagoCongress of the United States, Office of Technology Assessment. SDI: Technology Survivability and Software. Washington: D.C. : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 1988.
Dyfyniad MLACongress of the United States, Office of Technology Assessment. SDI: Technology Survivability and Software. Washington: D.C. : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 1988.
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