APA (7 ম সংস্করণ) উদ্ধৃতি

Enstad, G. G. (1981). A novel theory on the arching and doming in mass flow hoppers. Norges Teknisks Høgskole.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Enstad, Gisle G. A Novel Theory on the Arching and Doming in Mass Flow Hoppers. Bergen, Norway: Norges Teknisks Høgskole, 1981.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Enstad, Gisle G. A Novel Theory on the Arching and Doming in Mass Flow Hoppers. Norges Teknisks Høgskole, 1981.