Cita APA (7th ed.)
Winbland , U. Sanitation without water. WHO.
Cita Chicago (17th ed.)
Winbland , Uno. Sanitation Without Water. Alexandria ,Egypt: WHO.
Cita MLA (9th ed.)
Winbland , Uno. Sanitation Without Water. WHO.
Atenció: Aquestes cites poden no estar 100% correctes.