Beenhakker, H. L. (1983). Economic appraisal of rural roads: Simplified operational procedures for screening and appraisal. World Bank.
Lua i Stíl Chicago (17ú heag.)Beenhakker, H. L. Economic Appraisal of Rural Roads: Simplified Operational Procedures for Screening and Appraisal. Washington: World Bank, 1983.
Lua MLA (9ú heag.)Beenhakker, H. L. Economic Appraisal of Rural Roads: Simplified Operational Procedures for Screening and Appraisal. World Bank, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.