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Lua i Stíl Chicago (17ú heag.)Swedner, Harald. Ecological Differentiation of Habits and Attitudes. Lund: C.W.K. Gleerup, 1960.
Lua MLA (8ú heag.)Swedner, Harald. Ecological Differentiation of Habits and Attitudes. C.W.K. Gleerup, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.