APA

United Nations Department of Economic and Social Affairs, . (2001). Indicators of Sustainable Development: Guidelines and Methodologies. New York: United Nations.

Chicago

United Nations Department of Economic and Social Affairs, . 2001. Indicators of Sustainable Development: Guidelines and Methodologies. New York: United Nations.

Harvard

United Nations Department of Economic and Social Affairs, . (2001). Indicators of Sustainable Development: Guidelines and Methodologies. New York: United Nations.

MLA

United Nations Department of Economic and Social Affairs, . Indicators of Sustainable Development: Guidelines and Methodologies. New York: United Nations. 2001.