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Boessenecker, RW; Churchill, M (2016). "The origin of elephant seals: implications of a fragmentary late Pliocene seal (Phocidae: Miroungini) from New Zealand". New Zealand Journal of Geology and Geophysics. 59 (4): 544–550. Bibcode:2016NZJGG..59..544B. doi:10.1080/00288306.2016.1199437. S2CID133343398.
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Huber, Harriet R. (1 June 1987). "Natality and weaning success in relation to age of first reproduction in northern elephant seals". Canadian Journal of Zoology. 65 (6): 1311–1316. doi:10.1139/z87-207. ISSN0008-4301.
Boessenecker, RW; Churchill, M (2016). "The origin of elephant seals: implications of a fragmentary late Pliocene seal (Phocidae: Miroungini) from New Zealand". New Zealand Journal of Geology and Geophysics. 59 (4): 544–550. Bibcode:2016NZJGG..59..544B. doi:10.1080/00288306.2016.1199437. S2CID133343398.
Boessenecker, RW; Churchill, M (2016). "The origin of elephant seals: implications of a fragmentary late Pliocene seal (Phocidae: Miroungini) from New Zealand". New Zealand Journal of Geology and Geophysics. 59 (4): 544–550. Bibcode:2016NZJGG..59..544B. doi:10.1080/00288306.2016.1199437. S2CID133343398.
Huber, Harriet R. (1 June 1987). "Natality and weaning success in relation to age of first reproduction in northern elephant seals". Canadian Journal of Zoology. 65 (6): 1311–1316. doi:10.1139/z87-207. ISSN0008-4301.