APA (7th ed.) Citation

National Society for Clean Air & National Society for Clean Air and Environmental Protection (Great Britain). (1971). Clean air. National Society for Clean Air.

Chicago Style (17th ed.) Citation

National Society for Clean Air and National Society for Clean Air and Environmental Protection (Great Britain). Clean Air. Brighton, Eng.: National Society for Clean Air, 1971.

MLA (9th ed.) Citation

National Society for Clean Air and National Society for Clean Air and Environmental Protection (Great Britain). Clean Air. National Society for Clean Air, 1971.