Παραπομπή APA

World Health Organization. (1984). Guide Lines for Dringking - Water Quality. World Health Organisation.

Παραπομπή Chicago Style

World Health Organization. Guide Lines for Dringking - Water Quality. Geneva: World Health Organisation, 1984.

Παραπομπή MLA

World Health Organization. Guide Lines for Dringking - Water Quality. World Health Organisation, 1984.