Yano, Kazunari; Stevens, John D.; Compagno, Leonard J. V. (2004). "A review of the systematics of the sleeper shark genus Somniosus with redescriptions of Somniosus (Somniosus) antarcticus and Somniosus (Rhinoscymnus) longus (Squaliformes: Somniosidae)". Ichthyological Research. 51 (4): 360–73. doi:10.1007/s10228-004-0244-4.
Anthoni, Uffe; Christophersen, Carsten; Gram, Lone; Nielsen, Niels H.; Nielsen, Per (1991). "Poisonings from flesh of the Greenland shark Somniosus microcephalus may be due to trimethylamine". Toxicon. 29 (10): 1205–12. doi:10.1016/0041-0101(91)90193-U. PMID1801314.
"Greenland Shark". Marinebiodiversity.ca. Centre for Marine Biodiversity. Diarkibkan daripada yang asal pada 2014-04-03. Dicapai pada 23 May 2011. Unknown parameter |deadurl= ignored (bantuan)
Anthoni, Uffe; Christophersen, Carsten; Gram, Lone; Nielsen, Niels H.; Nielsen, Per (1991). "Poisonings from flesh of the Greenland shark Somniosus microcephalus may be due to trimethylamine". Toxicon. 29 (10): 1205–12. doi:10.1016/0041-0101(91)90193-U. PMID1801314.
Eagle, Dane. "Greenland shark". Florida Museum of Natural History. Dicapai pada 26 June 2012.
umich.edu
animaldiversity.ummz.umich.edu
Mills, Patrick (2006). Dewey, Tanya (penyunting). "Somniosus microcephalus". Animal Diversity Web. University of Michigan.
web.archive.org
"Greenland Shark". Marinebiodiversity.ca. Centre for Marine Biodiversity. Diarkibkan daripada yang asal pada 2014-04-03. Dicapai pada 23 May 2011. Unknown parameter |deadurl= ignored (bantuan)
wikipedia.org
en.wikipedia.org
Durst, Sidra (2012). "Hákarl". Dalam Deutsch, Jonathan; Murakhver, Natalya (penyunting). They Eat That? A Cultural Encyclopedia of Weird and Exotic Food from around the World. m/s. 91–2. ISBN978-0-313-38059-4. Cite has empty unknown parameter: |chapterurl= (bantuan)
"Greenland Shark". Marinebiodiversity.ca. Centre for Marine Biodiversity. Diarkibkan daripada yang asal pada 2014-04-03. Dicapai pada 23 May 2011. Unknown parameter |deadurl= ignored (bantuan)