^Bratberg, Terje; Mardal, Magnus A. "Oscar 2.". In Bolstad, Erik (ed.). Store norske leksikon (in Norwegian). Oslo: Norsk nettleksikon. Retrieved 4 January 2024.
^Fidjestøl, Alfred. "Amund Rydland". In Bolstad, Erik (ed.). Store norske leksikon (in Norwegian). Oslo: Norsk nettleksikon. Retrieved 3 February 2024.