Van der Tak, H. G., & Ray, A. (1971). The economic benefits of road transport projects. International Bank for Reconstruction and Development]; distributed by Johns Hopkins Press.
Lua i Stíl Chicago (17ú heag.)Van der Tak, Herman G., agus Anandarup Ray. The Economic Benefits of Road Transport Projects. [Washington: International Bank for Reconstruction and Development]; distributed by Johns Hopkins Press, 1971.
Lua MLA (9ú heag.)Van der Tak, Herman G., agus Anandarup Ray. The Economic Benefits of Road Transport Projects. International Bank for Reconstruction and Development]; distributed by Johns Hopkins Press, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.