APA (7th ed.) Citation

National Council for Mental Hygiene, Provisional National Council for Mental Health (Great Britain), & National Association for Mental Health (Great Britain). (1940). Mental health. National Association for Mental Health.

Chicago Style (17th ed.) Citation

National Council for Mental Hygiene, Provisional National Council for Mental Health (Great Britain), and National Association for Mental Health (Great Britain). Mental Health. London: National Association for Mental Health, 1940.

MLA (9th ed.) Citation

National Council for Mental Hygiene, et al. Mental Health. National Association for Mental Health, 1940.