Não informado. (1984). Education for Health. World Health Organization, Division of Public Information and Education.
Citação do estilo Chicago (17ª ed.)Não informado. Education for Health. Geneva, Suíça: World Health Organization, Division of Public Information and Education, 1984.
Citação MLA (8ª ed.)Não informado. Education for Health. World Health Organization, Division of Public Information and Education, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.