APA

United Nations. Department of Economic and Social Affrairs, . (1968). Manual of land tax administration. New York: United Nations.

Chicago

United Nations. Department of Economic and Social Affrairs, . 1968. Manual of land tax administration. New York: United Nations.

Harvard

United Nations. Department of Economic and Social Affrairs, . (1968). Manual of land tax administration. New York: United Nations.

MLA

United Nations. Department of Economic and Social Affrairs, . Manual of land tax administration. New York: United Nations. 1968.