Cox, P. R. (1970). Demography (4th ed.). Institute of Actuaries and the Faculty of Actuaries at the University Press.
Lua i Stíl Chicago (17ú heag.)Cox, Peter R. Demography. 4th ed. Cambridge [Eng.]: Institute of Actuaries and the Faculty of Actuaries at the University Press, 1970.
Lua MLA (9ú heag.)Cox, Peter R. Demography. 4th ed. Institute of Actuaries and the Faculty of Actuaries at the University Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.