Lua APA (7ú heag.)

Spellman, F. R. (1997). Wastewater biosolids to compost. Technomic.

Lua i Stíl Chicago (17ú heag.)

Spellman, Frank R. Wastewater Biosolids to Compost. Lancaster: Technomic, 1997.

Lua MLA (9ú heag.)

Spellman, Frank R. Wastewater Biosolids to Compost. Technomic, 1997.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.