Não informado. (1942). Monthly bulletin of the Ministry of Health and the Public Health Laboratory Service. Ministry of Health, Public Health Laboratory Service.
Citação do estilo Chicago (17ª ed.)Não informado. Monthly Bulletin of the Ministry of Health and the Public Health Laboratory Service. London: Ministry of Health, Public Health Laboratory Service, 1942.
Citação MLA (8ª ed.)Não informado. Monthly Bulletin of the Ministry of Health and the Public Health Laboratory Service. Ministry of Health, Public Health Laboratory Service, 1942.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.