Ehrig, R. (1992). Plastics recycling: : products and processes. Hanser.
シカゴスタイル引用形Ehrig, R.J. Plastics Recycling: : Products and Processes. Munich: Hanser, 1992.
MLA引用形式Ehrig, R.J. Plastics Recycling: : Products and Processes. Hanser, 1992.
警告: この引用は必ずしも正確ではありません.