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Constantine, R.; Brunton, D. H.; Dennis, T. (2004). "Dolphin-watching tour boats change bottlenose dolphin (Tursiops truncatus) behaviour". Biological Conservation. 117 (3): 299–307. Bibcode:2004BCons.117..299C. doi:10.1016/j.biocon.2003.12.009.
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Price, SA.; Bininda-Emonds, OR.; Gittleman, JL. (2005). "A complete phylogeny of the whales, dolphins and even-toed hoofed mammals – Cetartiodactyla". Biological Reviews of the Cambridge Philosophical Society. 80 (3): 445–473. doi:10.1017/s1464793105006743. PMID16094808. S2CID45056197.
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Lunn, Nicholas J.; Servanty, Sabrina; Regehr, Eric V.; Converse, Sarah J.; Richardson, Evan; Stirling, Ian (2016). "Demography of an apex predator at the edge of its range – impacts of changing sea ice on polar bears in Hudson Bay". Ecological Applications. 26 (5): 1302–1320. Bibcode:2016EcoAp..26.1302L. doi:10.1890/15-1256. PMID27755745.
Madronich, S.; McKenzie, R. L.; Björn, L. O.; Caldwell, M. M. (1998). "Changes in biologically active ultraviolet radiation reaching the Earth's surface". Journal of Photochemistry and Photobiology B: Biology. 46 (1–3): 5–19. CiteSeerX10.1.1.319.3101. doi:10.1016/S1011-1344(98)00182-1. PMID9894350.
Madronich, S.; McKenzie, R. L.; Björn, L. O.; Caldwell, M. M. (1998). "Changes in biologically active ultraviolet radiation reaching the Earth's surface". Journal of Photochemistry and Photobiology B: Biology. 46 (1–3): 5–19. CiteSeerX10.1.1.319.3101. doi:10.1016/S1011-1344(98)00182-1. PMID9894350.
Geisler, Jonathan H.; Uden, Mark D. (2005). "Phylogenetic Relationships of Extinct Cetartiodactyls: Results of Simultaneous Analyses of Molecular, Morphological, and Stratigraphic Data". Journal of Mammalian Evolution. 12 (1–2): 145–160. doi:10.1007/s10914-005-4963-8. S2CID34683201.
Price, SA.; Bininda-Emonds, OR.; Gittleman, JL. (2005). "A complete phylogeny of the whales, dolphins and even-toed hoofed mammals – Cetartiodactyla". Biological Reviews of the Cambridge Philosophical Society. 80 (3): 445–473. doi:10.1017/s1464793105006743. PMID16094808. S2CID45056197.
Samonds, K. E.; Zalmout, I. S.; Irwin, M. T.; Krause, D. W.; Rogers, R. R.; Raharivony, L. L. (2009). "Eotheroides lambondrano, new Middle Eocene seacow (Mammalia, Sirenia) from the Mahajanga Basin, Northwestern Madagascar". Journal of Vertebrate Paleontology. 29 (4): 1233–1243. Bibcode:2009JVPal..29.1233S. doi:10.1671/039.029.0417. S2CID59466434.
Waits, L. P.; Talbot, S. L.; Ward, R. H.; Shields, G. F. (2008). "Mitochondrial DNA Phylogeography of the North American Brown Bear and Implications for Conservation". Conservation Biology. 12 (2): 408–417. doi:10.1111/j.1523-1739.1998.96351.x. JSTOR2387511. S2CID86172292.
Roman, Joe; Estes, James A.; Morissette, Lyne; Smith, Craig; Costa, Daniel; McCarthy, James; Nation, J.B.; Nicol, Stephen; Pershing, Andrew; Smetacek, Victor (2014). "Whales as marine ecosystem engineers". Frontiers in Ecology and the Environment. 12 (7): 377–385. Bibcode:2014FrEE...12..377R. doi:10.1890/130220. Archived from the original on 2020-02-11. Retrieved 2019-12-14.
Roman, Joe; Estes, James A.; Morissette, Lyne; Smith, Craig; Costa, Daniel; McCarthy, James; Nation, J.B.; Nicol, Stephen; Pershing, Andrew; Smetacek, Victor (2014). "Whales as marine ecosystem engineers". Frontiers in Ecology and the Environment. 12 (7): 377–385. Bibcode:2014FrEE...12..377R. doi:10.1890/130220. Archived from the original on 2020-02-11. Retrieved 2019-12-14.
Rose, Naomi; Parsons, E. C. M.; Farinato, Richard. The Case Against Marine Mammals in Captivity(PDF) (4th ed.). Humane Society of the United States. pp. 13, 42, 43, 59. Archived from the original(PDF) on 2020-08-03. Retrieved 2019-03-18.
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