World Health Organization Regional Office for Europe & World Health Organization Regional Office for Europe. (1990). Indoor air quality: Biological contaminants : report on a WHO meeting, Rautavaara, 29 August-2 September 1988. World Health Organization, Regional Office for Europe.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Health Organization Regional Office for Europe και World Health Organization Regional Office for Europe. Indoor Air Quality: Biological Contaminants : Report on a WHO Meeting, Rautavaara, 29 August-2 September 1988. Copenhagen: World Health Organization, Regional Office for Europe, 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)World Health Organization Regional Office for Europe και World Health Organization Regional Office for Europe. Indoor Air Quality: Biological Contaminants : Report on a WHO Meeting, Rautavaara, 29 August-2 September 1988. World Health Organization, Regional Office for Europe, 1990.