Niebuhr, A. (2000). Convergence and the Effects of Spatial Interaction.
Lua i Stíl Chicago (17ú heag.)Niebuhr, Annekatrin. Convergence and the Effects of Spatial Interaction. Hamburg, 2000.
Lua MLA (8ú heag.)Niebuhr, Annekatrin. Convergence and the Effects of Spatial Interaction. 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.