Biblio
Journal Article
Barlow, J., Ferguson, M., Perrin, W. F., Ballance, L. T., Gerrodette, T., Joyce, G., et al.. (2006).
Abundance and density of beaked and bottlenose whales (Family Ziphiidae).
Journal of Cetacean Research and Management 7(3):263-270.,
7(3), 263-270.