1991. Working group on assessment of risks to health from smog episodes: Summary report. 's Hertogenbosch, Netherlands 30 October - 2 November 1990. Copenhagen: WHO.
Citace podle APA (7th ed.)(1991). Working group on assessment of risks to health from smog episodes: Summary report. 's Hertogenbosch, Netherlands 30 October - 2 November 1990. WHO.
Citace podle Chicago (17th ed.)Working Group on Assessment of Risks to Health from Smog Episodes: Summary Report. 'S Hertogenbosch, Netherlands 30 October - 2 November 1990. Copenhagen: WHO, 1991.
Citace podle MLA (9th ed.)Working Group on Assessment of Risks to Health from Smog Episodes: Summary Report. 'S Hertogenbosch, Netherlands 30 October - 2 November 1990. WHO, 1991.
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