- Joe Schwarcz. (2017). Polar bears can run up to 40 km per hour! Office for Science and Society, McGill University. https://www.mcgill.ca/oss/article/did-you-know/polar-bears-can-run-40-km-hour
- Polar Bear. Oceanwide Expeditions. https://oceanwide-expeditions.com/to-do/wildlife/polar-bear
- Ronald Woan. (2016). Ronald Woan. Flickr. Birt undir CC BY-NC 2.0 leyfi. https://www.flickr.com/photos/rwoan/27930358453/in/album-72157671544087605