(2008). Vocalizations of male bearded seals, Erignathus barbatus: Classification and geographical variation. Norwegian Polar Institute.
Chicago Style (17th ed.) CitationVocalizations of Male Bearded Seals, Erignathus Barbatus: Classification and Geographical Variation. Norwegian Polar Institute, 2008.
MLA (9th ed.) CitationVocalizations of Male Bearded Seals, Erignathus Barbatus: Classification and Geographical Variation. Norwegian Polar Institute, 2008.
Warning: These citations may not always be 100% accurate.