| উদ্ধৃতি | Heide-Jorgensen, M.P., 2009 Narwhal Monodon monoceros. pp. 754-758. In Perrin, W.F.; Wursig, B.; Thewissen, J.G.M., Encyclopedia of Marine Mammals, Second Edition. Academic Press: London, 1316 p. |
| সূত্র | 96328 Heide-Jorgensen, M.P., 2009 |
| পৃষ্ঠা | 754-758 |
| Named Used as Valid | Monodon monoceros |
| এলাকা | |
| Distribution | Atlantic, Pacific and the Arctic. |