Worrell, W. A. (2012). Solid waste engineering 2nd ed / William A. Worrel dan P. Aarne Vesilind. Cengage Lerning.
Chicago Style (17th ed.) CitationWorrell, William A. Solid Waste Engineering 2nd Ed / William A. Worrel Dan P. Aarne Vesilind. Cengage Lerning, 2012.
MLA (8th ed.) CitationWorrell, William A. Solid Waste Engineering 2nd Ed / William A. Worrel Dan P. Aarne Vesilind. Cengage Lerning, 2012.
Warning: These citations may not always be 100% accurate.