Não informado. (1966). Highways and Public Works. IPC Building and Contract Journals.
Chicago-referens (17:e uppl.)Não informado. Highways and Public Works. London: IPC Building and Contract Journals, 1966.
MLA-referens (8:e uppl.)Não informado. Highways and Public Works. IPC Building and Contract Journals, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.