Lavigne, David M. (2009). "Harp Seal". In Perrin, William F.; Würsig, Bernd G.; Thewissen, J. G. M. (eds.). Encyclopedia of Marine Mammals (2nd ed.). Amsterdam: Elsevier/Academic Press. pp. 542–546. doi:10.1016/B978-0-12-373553-9.00127-9. ISBN9780123735539. OCLC316226747.
Lydersen, Christian; Kovacs, Kit M. (1993). "Diving behaviour of lactating harp seal, Phoca groenlandica, females from the Gulf of St Lawrence, Canada". Animal Behaviour. 46 (6): 1213–1221. doi:10.1006/anbe.1993.1312. S2CID53203432.
Lindstrøm, Ulf; Nilssen, Kjell (2013). "Harp seal foraging behaviour during summer around Svalbard in the northern Barents Sea: diet composition and the selection of prey". Polar Biology. 36 (3): 305–320. Bibcode:2013PoBio..36..305L. doi:10.1007/s00300-012-1260-x. S2CID17370939.
Sergeant, D.E. (1973). "Transatlantic migration of a Harp Seal, Pagophilus groenlandicus". Journal of the Fisheries Research Board of Canada. 30: 124–125. doi:10.1139/f73-020.
Daoust, P-Y; Caraguel, C (2012-11-01). "The Canadian harp seal hunt: observations on the effectiveness of procedures to avoid poor animal welfare outcomes". Animal Welfare. 21 (4): 445–455. doi:10.7120/09627286.21.4.445. ISSN0962-7286. S2CID72487796.
Bowen, W. Don; Capstick, Charles K.; Sergeant, David E. (1981). "Temporal Changes in the Reproductive Potential of Female Harp Seals (Pagophilus groenlandicus)". Canadian Journal of Fisheries and Aquatic Sciences. 38 (5): 495–503. Bibcode:1981CJFAS..38..495B. doi:10.1139/f81-071.
Lindstrøm, Ulf; Nilssen, Kjell (2013). "Harp seal foraging behaviour during summer around Svalbard in the northern Barents Sea: diet composition and the selection of prey". Polar Biology. 36 (3): 305–320. Bibcode:2013PoBio..36..305L. doi:10.1007/s00300-012-1260-x. S2CID17370939.
Bowen, W. Don; Capstick, Charles K.; Sergeant, David E. (1981). "Temporal Changes in the Reproductive Potential of Female Harp Seals (Pagophilus groenlandicus)". Canadian Journal of Fisheries and Aquatic Sciences. 38 (5): 495–503. Bibcode:1981CJFAS..38..495B. doi:10.1139/f81-071.
Lydersen, Christian; Kovacs, Kit M. (1993). "Diving behaviour of lactating harp seal, Phoca groenlandica, females from the Gulf of St Lawrence, Canada". Animal Behaviour. 46 (6): 1213–1221. doi:10.1006/anbe.1993.1312. S2CID53203432.
Lindstrøm, Ulf; Nilssen, Kjell (2013). "Harp seal foraging behaviour during summer around Svalbard in the northern Barents Sea: diet composition and the selection of prey". Polar Biology. 36 (3): 305–320. Bibcode:2013PoBio..36..305L. doi:10.1007/s00300-012-1260-x. S2CID17370939.
Daoust, P-Y; Caraguel, C (2012-11-01). "The Canadian harp seal hunt: observations on the effectiveness of procedures to avoid poor animal welfare outcomes". Animal Welfare. 21 (4): 445–455. doi:10.7120/09627286.21.4.445. ISSN0962-7286. S2CID72487796.
Lavigne, David M. (2009). "Harp Seal". In Perrin, William F.; Würsig, Bernd G.; Thewissen, J. G. M. (eds.). Encyclopedia of Marine Mammals (2nd ed.). Amsterdam: Elsevier/Academic Press. pp. 542–546. doi:10.1016/B978-0-12-373553-9.00127-9. ISBN9780123735539. OCLC316226747.
Daoust, P-Y; Caraguel, C (2012-11-01). "The Canadian harp seal hunt: observations on the effectiveness of procedures to avoid poor animal welfare outcomes". Animal Welfare. 21 (4): 445–455. doi:10.7120/09627286.21.4.445. ISSN0962-7286. S2CID72487796.