Heimen | Scandinavian University Press/Universitetsforlaget. Cambridge University Press.
Chicago Style (17th ed.) ZitazioaHeimen | Scandinavian University Press/Universitetsforlaget. Cambridge University Press.
MLA (9th ed.) ZitazioaHeimen | Scandinavian University Press/Universitetsforlaget. Cambridge University Press.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.