Não informado. (1972). Building equipment and materials. IPC Building and Contract Journals.
Chicago-referens (17:e uppl.)Não informado. Building Equipment and Materials. London: IPC Building and Contract Journals, 1972.
MLA-referens (8:e uppl.)Não informado. Building Equipment and Materials. IPC Building and Contract Journals, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.