Dyfyniad APA

(1981). Handbook of mechanical and electrical systems for buildings. McGraw-Hill.

Dyfyniad Arddull Chicago

Handbook of Mechanical and Electrical Systems for Buildings. McGraw-Hill, 1981.

Dyfyniad MLA

Handbook of Mechanical and Electrical Systems for Buildings. McGraw-Hill, 1981.

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