(1974). The Layout of Roades in Entrol Areas: Metric suppliment. HMSO.
Chicago Style aipamenaThe Layout of Roades in Entrol Areas: Metric Suppliment. London: HMSO, 1974.
MLA aipamenaThe Layout of Roades in Entrol Areas: Metric Suppliment. HMSO, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.