APA (7th ed.) Citation

British Standards Institution. (1969). Specification for screwing taps (2nd revision.). B.S.I.

Chicago Style (17th ed.) Citation

British Standards Institution. Specification for Screwing Taps. 2nd revision. London: B.S.I, 1969.

MLA (8th ed.) Citation

British Standards Institution. Specification for Screwing Taps. 2nd revision. B.S.I, 1969.

Warning: These citations may not always be 100% accurate.