Siregar, I. (2007). Musculoskeletal disorders at a plastic bag manufacturing company.
Chicago Style (17th ed.) CitationSiregar, Ikhsan. Musculoskeletal Disorders at a Plastic Bag Manufacturing Company. 2007.
MLA引文Siregar, Ikhsan. Musculoskeletal Disorders at a Plastic Bag Manufacturing Company. 2007.
警告：这些引文格式不一定是100％准确.