Não informado. (1969). Highways & Traffic Engineering. IPC Building and Contract Journals.
Cita Chicago Style (17a ed.)Não informado. Highways & Traffic Engineering. London: IPC Building and Contract Journals, 1969.
Cita MLA (8a ed.)Não informado. Highways & Traffic Engineering. IPC Building and Contract Journals, 1969.
Precaución: Estas citas no son 100% exactas.