Halldór Hermansson, Bibliography of the Icelandic Sagas and Minor Tales, Islandica 1, Ithaca, New York: Cornell University Library, 1908, OCLC2778047, p. 4, however, says that it was composed around 900.
worldcat.org
Jan de Vries, Altnordische Literaturgeschichte volume 2 Die Literatur von etwa 1150 bis 1300, die Spätzeit nach 1300, Grundriß der germanischen Philologie 16, 2nd ed. Berlin: de Gruyter, 1967, OCLC715891742, pp. 338–39 (en alemán) classes it in the fifth and last group.
Halldór Hermansson, Bibliography of the Icelandic Sagas and Minor Tales, Islandica 1, Ithaca, New York: Cornell University Library, 1908, OCLC2778047, p. 4, however, says that it was composed around 900.