Não informado. (1972). Building equipment and materials. IPC Building and Contract Journals.
Citação do estilo Chicago (17ª ed.)Não informado. Building Equipment and Materials. London: IPC Building and Contract Journals, 1972.
Citação MLA (8ª ed.)Não informado. Building Equipment and Materials. IPC Building and Contract Journals, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.