Sandahl, B. (1975). Seasonal and secular trends in reproductive wastage in Sweden. s.n.].
Lua i Stíl Chicago (17ú heag.)Sandahl, Björn. Seasonal and Secular Trends in Reproductive Wastage in Sweden. Lund [Sweden: s.n.], 1975.
Lua MLA (8ú heag.)Sandahl, Björn. Seasonal and Secular Trends in Reproductive Wastage in Sweden. s.n.], 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.