ডধৎরিপশ, উ. চ., & Lininger, C. A. (1975). The sample survey: Theory and practice. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)ডধৎরিপশ, উড়হধষফ চ., agus Charles A. Lininger. The Sample Survey: Theory and Practice. New York: McGraw-Hill, 1975.
Lua MLA (9ú heag.)ডধৎরিপশ, উড়হধষফ চ., agus Charles A. Lininger. The Sample Survey: Theory and Practice. McGraw-Hill, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.