Friis, H. K. (1950). Scandinavia: Between East and West. Cornell University Press.
Lua i Stíl Chicago (17ú heag.)Friis, Henning Kristian. Scandinavia: Between East and West. Ithaca: Cornell University Press, 1950.
Lua MLA (9ú heag.)Friis, Henning Kristian. Scandinavia: Between East and West. Cornell University Press, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.