APA (7 ম সংস্করণ) উদ্ধৃতি

BENTLEY, R. (1992). Research and technology in the former German DemocraticRepublic. Westview.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

BENTLEY, Raymond. Research and Technology in the Former German DemocraticRepublic. Boulder: Westview, 1992.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

BENTLEY, Raymond. Research and Technology in the Former German DemocraticRepublic. Westview, 1992.