APA aipamena

(2005).  Financing and charges for wastewater systems: WEF manual of practice No. 27.  McGraw-Hill.

Chicago Style aipamena

 Financing and Charges for Wastewater Systems: WEF Manual of Practice No. 27.  McGraw-Hill, 2005.

MLA aipamena

 Financing and Charges for Wastewater Systems: WEF Manual of Practice No. 27.  McGraw-Hill, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.