World Health Organization. (2006). Guidelines for safe recreational water environmnets: Swimming pools and similar environments. World Health organization.
Citação do estilo Chicago (17ª ed.)World Health Organization. Guidelines for Safe Recreational Water Environmnets: Swimming Pools and Similar Environments. Geneva: World Health organization, 2006.
Citação MLA (8ª ed.)World Health Organization. Guidelines for Safe Recreational Water Environmnets: Swimming Pools and Similar Environments. World Health organization, 2006.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.