APA

Department international economic and social affairs statistical office, . (1992). The follow-up method in demographic sample surveys. New York: United nations.

Chicago

Department international economic and social affairs statistical office, . 1992. The follow-up method in demographic sample surveys. New York: United nations.

Harvard

Department international economic and social affairs statistical office, . (1992). The follow-up method in demographic sample surveys. New York: United nations.

MLA

Department international economic and social affairs statistical office, . The follow-up method in demographic sample surveys. New York: United nations. 1992.