Fitzpatrick, M. (2002). Environmental health services in Europe 6: The development of professional associations. World Health Organization Regional Office for Europe.
Citazione stile Chigago Style (17a edizione)Fitzpatrick, Martin. Environmental Health Services in Europe 6: The Development of Professional Associations. Copenhagen, Denmark: World Health Organization Regional Office for Europe, 2002.
Citatione MLA (9a ed.)Fitzpatrick, Martin. Environmental Health Services in Europe 6: The Development of Professional Associations. World Health Organization Regional Office for Europe, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.