Dyfyniad APA

Rosen, H. J. (1999). Construction specifications writing: Principles and procedures (4th ed.). John Wiley.

Dyfyniad Arddull Chicago

Rosen, Harold J. Construction Specifications Writing: Principles and Procedures. 4th ed. New York: John Wiley, 1999.

Dyfyniad MLA

Rosen, Harold J. Construction Specifications Writing: Principles and Procedures. 4th ed. John Wiley, 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.