Não informado. (2008). Roads and road construction year book & directory. Carriers Publishing Company.
Chicago-Zitierstil (17. Ausg.)Não informado. Roads and Road Construction Year Book & Directory. London: Carriers Publishing Company, 2008.
MLA-Zitierstil (8. Ausg.)Não informado. Roads and Road Construction Year Book & Directory. Carriers Publishing Company, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.