APA (7th ed.) Citation

British Standards Institution. (1981). Sound power levels of noise sources (1st revision.). British Standards Institution.

Chicago Style (17th ed.) Citation

British Standards Institution. Sound Power Levels of Noise Sources. 1st revision. London: British Standards Institution, 1981.

MLA (8th ed.) Citation

British Standards Institution. Sound Power Levels of Noise Sources. 1st revision. British Standards Institution, 1981.

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