Rosen, H. J. (1999). Construction specifications writing: Principles and procedures (4th ed.). John Wiley.
Lua i Stíl Chicago (17ú heag.)Rosen, Harold J. Construction Specifications Writing: Principles and Procedures. 4th ed. New York: John Wiley, 1999.
Lua MLA (8ú heag.)Rosen, Harold J. Construction Specifications Writing: Principles and Procedures. 4th ed. John Wiley, 1999.
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