Livi Bacci, M. (1971). A century of Portuguese fertility. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Livi Bacci, Massimo. A Century of Portuguese Fertility. Princeton, N.J: Princeton University Press, 1971.
Lua MLA (9ú heag.)Livi Bacci, Massimo. A Century of Portuguese Fertility. Princeton University Press, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.