(1972). Transportation ; problems and prospects.
Chicago Style (17. basım) AtıfTransportation ; Problems and Prospects. 1972.
MLA (9th ed.) AtıfTransportation ; Problems and Prospects. 1972.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
(1972). Transportation ; problems and prospects.
Chicago Style (17. basım) AtıfTransportation ; Problems and Prospects. 1972.
MLA (9th ed.) AtıfTransportation ; Problems and Prospects. 1972.