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Folkow, L.P.; Nordøy, E.S. Distribution and diving behaviour of harp seals (Pagophilus groenlandicus) from the Greenland Sea stock. Polar Biology. 2004, 27 (5): 281–298. S2CID 27841378. doi:10.1007/s00300-004-0591-7.
Lydersen, Christian; Kovacs, Kit M. Diving behaviour of lactating harp seal, Phoca groenlandica, females from the Gulf of St Lawrence, Canada. Animal Behaviour. 1993, 46 (6): 1213–1221. S2CID 53203432. doi:10.1006/anbe.1993.1312.
Daoust, P-Y; Caraguel, C. The Canadian harp seal hunt: observations on the effectiveness of procedures to avoid poor animal welfare outcomes. Animal Welfare. 2012-11-01, 21 (4): 445–455. ISSN 0962-7286. S2CID 72487796. doi:10.7120/09627286.21.4.445(英语).
Lindstrøm, Ulf; Nilssen, Kjell. Harp seal foraging behaviour during summer around Svalbard in the northern Barents Sea: diet composition and the selection of prey. Polar Biology. 2013, 36 (3): 305–320. S2CID 17370939. doi:10.1007/s00300-012-1260-x.
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Berta, Annalisa; Churchill, Morgan. Pinniped taxonomy: review of currently recognized species and subspecies, and evidence used for their description. Mammal Review. 2012-07-01, 42 (3): 207–234. ISSN 1365-2907. doi:10.1111/j.1365-2907.2011.00193.x(英语).
Sergeant, D.E. History and present status of populations of harp and hooded seals. Biological Conservation. 1976-09-01, 10 (2): 95–118. ISSN 0006-3207. doi:10.1016/0006-3207(76)90055-0(英语).
Daoust, P-Y; Caraguel, C. The Canadian harp seal hunt: observations on the effectiveness of procedures to avoid poor animal welfare outcomes. Animal Welfare. 2012-11-01, 21 (4): 445–455. ISSN 0962-7286. S2CID 72487796. doi:10.7120/09627286.21.4.445(英语).