APA
UNITED NATIONS I. E. A. S. A. o., UNITED NATIONS I. E. A. S. A. o., . (1990). Supplementary principles and recommendations for population and housing censuses. New York: United Nations.
Chicago
UNITED NATIONS INTERNATIONAL ECONOMIC AND SOCIAL AFFAIRS(Department of--), UNITED NATIONS INTERNATIONAL ECONOMIC AND SOCIAL AFFAIRS(Department of--), . 1990. Supplementary principles and recommendations for population and housing censuses. New York: United Nations.
Harvard
UNITED NATIONS I. E. A. S. A. o., UNITED NATIONS I. E. A. S. A. o., . (1990). Supplementary principles and recommendations for population and housing censuses. New York: United Nations.
MLA
UNITED NATIONS INTERNATIONAL ECONOMIC AND SOCIAL AFFAIRS(Department of--), UNITED NATIONS INTERNATIONAL ECONOMIC AND SOCIAL AFFAIRS(Department of--), . Supplementary principles and recommendations for population and housing censuses. New York: United Nations. 1990.
