HERVA, Vesa-Pekka (ed). Survey and excavation at Lake Vetsijärvi, Lapland - Tuija Rankama & Jarmo Kankaanpää. People, Material Culture And Environment In The North, Proceedings of the 22nd Nordic Archaeological Conference, University of Oulu, 18–23 August 2004 [online]. [cit. 2022-01-17]. Dostupné online.
snl.no
nbl.snl.no
TANSEM, Karin. Anders Nummedal / Store norske leksikon. [s.l.]: [s.n.] Dostupné online. (norsky (bokmål))