Norse Religion in Long-Term Perspectives: Origins, Changes, and Interactions. Nordic Academic Press. Birley, A. R. 1999. Trans. Tacitus, Germania. Oxford University Press. Hacken, Richard. 2022. Worship of the German Forest: An Historical Overview. Academia Letters. Hermann Pálsson. 2006 [1972]. Landnámabók: The Book of Settlements. University of Manitoba Press. Magnell, Ola; Iregren, Elisabeth. 2010. "Veitstu Hvé Blóta Skal : The Old Norse Blót in the Light of Osteological Remains from Frösö Church, Jämtland, Sweden". Current Swedish Archaeology. 18. Nordic Academic Press. Orel, Vladimir. 2003. A Handbook of Germanic Etymology. Brill. Ringe, Donald. 2006. From Proto-Indo-European to Proto-Germanic: A Linguistic History of English, 1. Oxford University Press. Simek, Rudolf. 2007. Translated by Angela Hall. Dictionary of Northern Mythology. D.S. Brewer. De Vries, Jan. 1970. Altgermanische Religionsgeschichte. Vol. 1. Grundriss der germanischen Philologie 12/I. 3rd ed (repr. 2nd ed [1956]). De Gruyter. . Further reading Palm, Thede (1948). Trädkult: Studier i germansk religionshistoria. Skrifter utgivna av Vetenskaps-societeten i Lund, 33. Gleerup. . Trees in Germanic paganism Trees in Germanic mythology Sacred groves