Freeden, M. Eugenics and progressive thought: A study in ideological affinity. Varia 11 : [Aufsatzsammlung].
Lua i Stíl Chicago (17ú heag.)Freeden, Michael. "Eugenics and Progressive Thought: A Study in Ideological Affinity." Varia 11 : [Aufsatzsammlung] .
Lua MLA (8ú heag.)Freeden, Michael. "Eugenics and Progressive Thought: A Study in Ideological Affinity." Varia 11 : [Aufsatzsammlung], .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.