APA (7 ম সংস্করণ) উদ্ধৃতি

Cross, D., Jonkel, C., Robertson, R., Smith, P., & Stirling, I. The ecology of the polar bear (Ursus maritimus) along the western coast of the Hudson Bay.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Cross, Dale, Charles Jonkel, Richard Robertson, Pauline Smith, এবং Ian Stirling. The Ecology of the Polar Bear (Ursus Maritimus) Along the Western Coast of the Hudson Bay.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Cross, Dale, et al. The Ecology of the Polar Bear (Ursus Maritimus) Along the Western Coast of the Hudson Bay.