อ้างอิง ของ สำมะโน

  1. ↑ United Nations (2008). Principles and Recommendations for Population and Housing Censuses. Statistical Papers: Series M No. 67/Rev.2. p8. ISBN 978-92-1-161505-0.
  2. ↑ "CES 2010 Census Recommendations" (PDF). Unece.org. สืบค้นเมื่อ 2013-11-19.
  3. ↑ "History and Development of the Census in England and Wales". theforgottenfamily.wordpress.org. สืบค้นเมื่อ 2017-01-20.
  4. ↑ Salant, Priscilla, and Don A. Dillman. "How to Conduct your own Survey: Leading professional give you proven techniques for getting reliable results." (1995).