APA (7th ed.) Citation

British Standards Institution. (1973). Specification for gas meters. British Standards Institution.

Chicago Style (17th ed.) Citation

British Standards Institution. Specification for Gas Meters. London: British Standards Institution, 1973.

MLA (8th ed.) Citation

British Standards Institution. Specification for Gas Meters. British Standards Institution, 1973.

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