(1983). Oxidation Ditches In Wastewater Treatment Edited By D. Barnes; C.f. Foster And Dwm Johnstone. Pitman Publishing.
Lua i Stíl Chicago (17ú heag.)Oxidation Ditches In Wastewater Treatment Edited By D. Barnes; C.f. Foster And Dwm Johnstone. Pitman Publishing, 1983.
Lua MLA (8ú heag.)Oxidation Ditches In Wastewater Treatment Edited By D. Barnes; C.f. Foster And Dwm Johnstone. Pitman Publishing, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.