Παραπομπή σε μορφή APA (7η εκδ.)

Oum, T. H. (1990). A survey of recent estimates of price elasticities of demand for transport. Infrastructure and Urban Development Department, World Bank.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Oum, Tae H. A Survey of Recent Estimates of Price Elasticities of Demand for Transport. Washington, D.C: Infrastructure and Urban Development Department, World Bank, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Oum, Tae H. A Survey of Recent Estimates of Price Elasticities of Demand for Transport. Infrastructure and Urban Development Department, World Bank, 1990.