APA
Danish International Development Agency, Ethiopian Road authority, . (1980). African regional seminar on the application of appropriate technology in road construction. Geneva: ILO.
Chicago
Danish International Development Agency, Ethiopian Road authority, . 1980. African regional seminar on the application of appropriate technology in road construction. Geneva: ILO.
Harvard
Danish International Development Agency, Ethiopian Road authority, . (1980). African regional seminar on the application of appropriate technology in road construction. Geneva: ILO.
MLA
Danish International Development Agency, Ethiopian Road authority, . African regional seminar on the application of appropriate technology in road construction. Geneva: ILO. 1980.