Sørensen, T.B.; Kinze, C.C. (1994). "Reproduction and reproductive seasonality in Danish harbour porpoises, Phocoena phocoena". Ophelia. 39 (3): 159–176. doi:10.1080/00785326.1994.10429541.
Ichishima, H.; Kimura, M. (2005). "Harborophocoena toyoshimai, a new early Pliocene porpoise (Cetacea, Phocoenidae) from Hokkaido, Japan". Journal of Vertebrate Paleontology. 25 (3): 655–664. doi:10.1671/0272-4634(2005)025[0655:htanep]2.0.co;2. S2CID85421985.
Kastelein, R. A.; Schop, J.; Gransier, R.; Steen, N.; Jennings, N. (2014). "Effect of Series of 1 to 2 kHz and 6 to 7 kHz Up-Sweeps and Down-Sweeps on the Behavior of a Harbor Porpoise (Phocoena phocoena)". Aquatic Mammals. 40 (3): 232–242. doi:10.1578/AM.40.3.2014.232.
Hashimoto, M.; Shirakihara, K.; Shirakihara, M.; Hiramatsu, K. (2013). "Estimating the rate of increase for the finless porpoise with special attention to predictions for the inland sea population in japan". Population Ecology. 55 (3): 441–449. Bibcode:2013PopEc..55..441H. doi:10.1007/s10144-013-0374-5. S2CID15843140.
Barlow, J. (2014). "Vaquita (Phocoena sinus)". Edge of Existence programme. Zoological Society of London. Archived from the original on 26 October 2016. Retrieved 25 October 2015.
Hashimoto, M.; Shirakihara, K.; Shirakihara, M.; Hiramatsu, K. (2013). "Estimating the rate of increase for the finless porpoise with special attention to predictions for the inland sea population in japan". Population Ecology. 55 (3): 441–449. Bibcode:2013PopEc..55..441H. doi:10.1007/s10144-013-0374-5. S2CID15843140.
Ichishima, H.; Kimura, M. (2005). "Harborophocoena toyoshimai, a new early Pliocene porpoise (Cetacea, Phocoenidae) from Hokkaido, Japan". Journal of Vertebrate Paleontology. 25 (3): 655–664. doi:10.1671/0272-4634(2005)025[0655:htanep]2.0.co;2. S2CID85421985.
Hashimoto, M.; Shirakihara, K.; Shirakihara, M.; Hiramatsu, K. (2013). "Estimating the rate of increase for the finless porpoise with special attention to predictions for the inland sea population in japan". Population Ecology. 55 (3): 441–449. Bibcode:2013PopEc..55..441H. doi:10.1007/s10144-013-0374-5. S2CID15843140.
Wang, D.; Hao, Y.; Wang, K.; Zhao, Q.; Chen, D.; Wei, Z.; Zhang, X. (2005). "the first yangtze finless porpoise successfully born in captivity". Environmental Science and Pollution Research International. 12 (5): 247–250. doi:10.1065/espr2005.08.284. PMID16206715. S2CID37638759.
Barlow, J. (2014). "Vaquita (Phocoena sinus)". Edge of Existence programme. Zoological Society of London. Archived from the original on 26 October 2016. Retrieved 25 October 2015.
Culik, B.; von Dorrien, C.; Muller, V.; Conrad, M. (2015). "Bioacoustics". The International Journal of Animal Sound and Its Recording. 24 (3). ISSN0952-4622.