Christensen, T. H. (2011). Solid waste technology & management. John Wiley & Sons, Ltd.
Lua i Stíl Chicago (17ú heag.)Christensen, Thomas H. Solid Waste Technology & Management. Chichester, West Sussex, United Kingdom: John Wiley & Sons, Ltd, 2011.
Lua MLA (9ú heag.)Christensen, Thomas H. Solid Waste Technology & Management. John Wiley & Sons, Ltd, 2011.
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