Kristoffer Kruken - Ola Stemshaug: Norsk personnamnleksikon, Det Norske Samlaget, Oslo 1995, →ISBN
Statistisk sentralbyrå, Namnestatistikk: 15 092 females with the given name Tone living in Norway on January 1st 2011, with the frequency peak in the 1960s. Accessed on April 18th, 2011.