Boetes, R. (1986). Heat transfer reduction in closed cell polyurethane foams.
Čikaški stil citiranja (17. izdanje)Boetes, Rudolf. Heat Transfer Reduction in Closed Cell Polyurethane Foams. 1986.
MLA način citiranja (8. izdanje)Boetes, Rudolf. Heat Transfer Reduction in Closed Cell Polyurethane Foams. 1986.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.