International Labour Office, Edmonds, G. A., & Howe, J. D. G. F. (1980). Roads and resources: Appropriate technology in road construction in developing countries : a study prepared for the International Labour Office within the framework of the World Employment Programme. Intermediate Technology Publication.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Labour Office, G. A. Edmonds, और J. D. G. F. Howe. Roads and Resources: Appropriate Technology in Road Construction in Developing Countries : A Study Prepared for the International Labour Office Within the Framework of the World Employment Programme. London: Intermediate Technology Publication, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रInternational Labour Office, et al. Roads and Resources: Appropriate Technology in Road Construction in Developing Countries : A Study Prepared for the International Labour Office Within the Framework of the World Employment Programme. Intermediate Technology Publication, 1980.