United Nations Industrial Development Organization. (1972). Manual on the use of consultants in developing countries. United Nations.
Chicago Style aipamenaUnited Nations Industrial Development Organization. Manual on the Use of Consultants in Developing Countries. New York: United Nations, 1972.
MLA aipamenaUnited Nations Industrial Development Organization. Manual on the Use of Consultants in Developing Countries. United Nations, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.