APA (7 ম সংস্করণ) উদ্ধৃতি

British Standards Institution. (1968). Specification for fine pitch gears. British Standards Institution.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

British Standards Institution. Specification for Fine Pitch Gears. London: British Standards Institution, 1968.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

British Standards Institution. Specification for Fine Pitch Gears. British Standards Institution, 1968.