Spellman, F. R. (1997). Wastewater biosolids to compost. Technomic.
Chicago Style (17th ed.) CitationSpellman, Frank R. Wastewater Biosolids to Compost. Lancaster: Technomic, 1997.
MLA (9th ed.) CitationSpellman, Frank R. Wastewater Biosolids to Compost. Technomic, 1997.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.