Liukkonen, Petri. "Rolf Jacobsen". Books and Writers (kirjasto.sci.fi). Finland: Kuusankoski Public Library. Archived from the original on 29 December 2010.
snl.no
nbl.snl.no
Hanne Lillebo. "Rolf Jacobsen". Norsk biografisk leksikon. Retrieved June 1, 2018.
Liukkonen, Petri. "Rolf Jacobsen". Books and Writers (kirjasto.sci.fi). Finland: Kuusankoski Public Library. Archived from the original on 29 December 2010.