S. Thompson, Motif-index of folk-literature : a classification of narrative elements in folktales, ballads, myths, fables, mediaeval romances, exempla, fabliaux, jest-books, and local legends", 1955-1958. [1]Arkiverad 4 mars 2016 hämtat från the Wayback Machine. cf.Aarne–Thompson classification system
S. Thompson, Motif-index of folk-literature : a classification of narrative elements in folktales, ballads, myths, fables, mediaeval romances, exempla, fabliaux, jest-books, and local legends", 1955-1958. [1]Arkiverad 4 mars 2016 hämtat från the Wayback Machine. cf.Aarne–Thompson classification system