APA استشهاد

(1987). Operation and maintenance of sludge dewatering systems: Manual of practice No. OM-8. Alexandria: World Health Organization (WHO).

استشهاد بنمط شيكاغو

Operation and Maintenance of Sludge Dewatering Systems: Manual of Practice No. OM-8. Alexandria: World Health Organization (WHO), 1987.

MLA استشهاد

Operation and Maintenance of Sludge Dewatering Systems: Manual of Practice No. OM-8. Alexandria: World Health Organization (WHO), 1987.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.