Não informado. (2003). Journal of the Royal Society for the Promotion of Health. Royal Society for the Promotion of Health.
Citação do estilo Chicago (17ª ed.)Não informado. Journal of the Royal Society for the Promotion of Health. London: Royal Society for the Promotion of Health, 2003.
Citação MLA (8ª ed.)Não informado. Journal of the Royal Society for the Promotion of Health. Royal Society for the Promotion of Health, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.