Muhammad Umar. (2008). Pengurusan bahan buangan. Kuala Lumpur: Jurus Prinsip Sdn Bhd.
Chicago Style CitationMuhammad Umar. Pengurusan Bahan Buangan. Kuala Lumpur: Jurus Prinsip Sdn Bhd, 2008.
MLA CitationMuhammad Umar. Pengurusan Bahan Buangan. Kuala Lumpur: Jurus Prinsip Sdn Bhd, 2008.
Warning: These citations may not always be 100% accurate.