Risk Reduction Engineering Research Laboratory (U.S.) & Burgiel, J. (1994). Cost evaluation of automated and manual post-consumer plastic bottle sorting systems. Risk Reduction Engineering Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency.
Παραπομπή σε μορφή Chicago (17η εκδ.)Risk Reduction Engineering Research Laboratory (U.S.) και Jonathan Burgiel. Cost Evaluation of Automated and Manual Post-consumer Plastic Bottle Sorting Systems. Cincinnati: Risk Reduction Engineering Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1994.
Παραπομπή σε μορφή MLA (9th εκδ.)Risk Reduction Engineering Research Laboratory (U.S.) και Jonathan Burgiel. Cost Evaluation of Automated and Manual Post-consumer Plastic Bottle Sorting Systems. Risk Reduction Engineering Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1994.