Não informado. (1934). Highways, Bridges and Engineering Works. IPC Building and Contract Journals.
Citação do estilo Chicago (17ª ed.)Não informado. Highways, Bridges and Engineering Works. London: IPC Building and Contract Journals, 1934.
Citação MLA (8ª ed.)Não informado. Highways, Bridges and Engineering Works. IPC Building and Contract Journals, 1934.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.