World Health Organization. Regional Office for Europe & ebrary, Inc. (2010). Sixty years of WHO in Europe. WHO Regional Office for Europe.
Citação do estilo Chicago (17ª ed.)World Health Organization. Regional Office for Europe e Inc ebrary. Sixty Years of WHO in Europe. Copenhagen: WHO Regional Office for Europe, 2010.
Citação MLA (9ª ed.)World Health Organization. Regional Office for Europe e Inc ebrary. Sixty Years of WHO in Europe. WHO Regional Office for Europe, 2010.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.