Copper Development Association. (1985). Copper in roofing: Design and installation. Copper Development Association.
Citazione stile Chigago Style (17a edizione)Copper Development Association. Copper in Roofing: Design and Installation. Oxford: Copper Development Association, 1985.
Citatione MLA (9a ed.)Copper Development Association. Copper in Roofing: Design and Installation. Copper Development Association, 1985.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.