APA
United Nations Development Programme, United Nations Development Programme, . (1986). Photovoltaic technology for development. [New York: United Nations Development Programme Energy Office.
Chicago
United Nations Development Programme, United Nations Development Programme, . 1986. Photovoltaic technology for development. [New York: United Nations Development Programme Energy Office.
Harvard
United Nations Development Programme, United Nations Development Programme, . (1986). Photovoltaic technology for development. [New York: United Nations Development Programme Energy Office.
MLA
United Nations Development Programme, United Nations Development Programme, . Photovoltaic technology for development. [New York: United Nations Development Programme Energy Office. 1986.