United States. Dept. of Housing and Urban Development. Office of International Affairs & Robinson, H. (1976). Aided self-help housing, its history and potential. U.S. Dept. of Housing and Urban Development, Office of International Affairs : for sale by the Supt. of Docs., U.S. Govt. Print. Off..
Cita Chicago (17th ed.)United States. Dept. of Housing and Urban Development. Office of International Affairs i Harold Robinson. Aided Self-help Housing, Its History and Potential. Washington: U.S. Dept. of Housing and Urban Development, Office of International Affairs : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1976.
Cita MLA (8th ed.)United States. Dept. of Housing and Urban Development. Office of International Affairs i Harold Robinson. Aided Self-help Housing, Its History and Potential. U.S. Dept. of Housing and Urban Development, Office of International Affairs : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1976.