Methodology of demographic sample surveys : report.
- New York : United Nations, 1971.
- [United Nations. Statistical Office] Statistical papers ; ser. M, no. 51 [United Nations. Document] ST/STAT/Ser. M/51; ST/TAO/Ser.C/119 .
- Document (United Nations) ; ST/STAT/Ser.M/51, etc. Statistical papers. Series M. ; Statistical papers. Series M. ; ser. M, no. 51 .