Não informado. (1950). Acta agriculturae scandinavica. Royal Swedish Academy of Agricultute and Forestry.
Chicago-referens (17:e uppl.)Não informado. Acta Agriculturae Scandinavica. Stockholm: Royal Swedish Academy of Agricultute and Forestry, 1950.
MLA-referens (8:e uppl.)Não informado. Acta Agriculturae Scandinavica. Royal Swedish Academy of Agricultute and Forestry, 1950.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.