Pike, D. G., Gunnlaugsson, T., Desportes, G., Mikkelsen, B., Vikingsson, G. A., & Bloch, D. (2019, February). Estimates of the relative abundance of long-finned pilot whales (Globicephala melas) in the Northeast Atlantic from 1987 to 2015 indicate no long-term trends. NAMMCO Scientific Publications.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pike, Daniel G., Thorvaldur Gunnlaugsson, Geneviève Desportes, Bjarni Mikkelsen, Gísli A. Vikingsson, و Dorete Bloch. "Estimates of the Relative Abundance of Long-finned Pilot Whales (Globicephala Melas) in the Northeast Atlantic from 1987 to 2015 Indicate No Long-term Trends." NAMMCO Scientific Publications Feb. 2019.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Pike, Daniel G., et al. "Estimates of the Relative Abundance of Long-finned Pilot Whales (Globicephala Melas) in the Northeast Atlantic from 1987 to 2015 Indicate No Long-term Trends." NAMMCO Scientific Publications, Feb. 2019.