Παραπομπή σε μορφή APA (7η εκδ.)

(1994). Operation and Maintenance of Urban Water Supply and Sanitation Systems A guide for Managers. World Health Organization.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Operation and Maintenance of Urban Water Supply and Sanitation Systems A Guide for Managers. Ginebra: World Health Organization, 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

Operation and Maintenance of Urban Water Supply and Sanitation Systems A Guide for Managers. World Health Organization, 1994.