Reher, D. S., & Schofield, R. (1993). Old and new methods in historical demography. Clarendon Press.
Lua i Stíl Chicago (17ú heag.)Reher, David Sven, agus Roger Schofield. Old and New Methods in Historical Demography. Oxford [Eng.]: Clarendon Press, 1993.
Lua MLA (9ú heag.)Reher, David Sven, agus Roger Schofield. Old and New Methods in Historical Demography. Clarendon Press, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.