(1994). Operation and maintenance of water supply and sanitaion systems: Case studies. Genava: World Health Organization (WHO).
استشهاد بنمط شيكاغوOperation and Maintenance of Water Supply and Sanitaion Systems: Case Studies. Genava: World Health Organization (WHO), 1994.
MLA استشهادOperation and Maintenance of Water Supply and Sanitaion Systems: Case Studies. Genava: World Health Organization (WHO), 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.