5R : praktis & peluang - Muhamad Azry Khoiry; Nurul Nazli Rosli; Noor Ezlin Ahmad Basri (Bangi, Selangor : Penerbit Universiti Kebangsaan Malaysia, 2021)
Rujukan : mukasurat 129-132.
Keywords: Refuse and refuse disposal; Salvage (Waste, etc).; Recycle products