The following core principles of source criticism were formulated by two Scandinavian historians, Olden-Jørgensen (1998) and Thurén (1997): Human sources may be relics such as a fingerprint; or narratives such as a statement or a letter.
Parimet bazë të kritikës së burimit u formuluan nga dy historiane skandinavë, Olsen-Jorgsen (1998) dhe Thuren (1997): ⦁ Burimet njerëzore mund të jenë relike, si gjurmë gishtërinjsh, ose dëshmi, si fjali apo letra.