APA
United Nations I. E. a. S. A., .Indirect Techniques for Demographic Estimation. New York: .
Chicago
United Nations International Economic and Social Affairs, .Indirect Techniques for Demographic Estimation. New York: .
Harvard
United Nations I. E. a. S. A., .Indirect Techniques for Demographic Estimation. New York: .
MLA
United Nations International Economic and Social Affairs, .New York: . .
