LIEW KA HOE, LIM JOON EU, SHUM WAI FOONG, NG SHYI HUEI, FU BIN YA, TAY CHEE SENG, & YEAM TEIK WOOI. (2003). To DESIGN and build a model of compartment for sorting metel, plastic and paper for recycling purpose by Liew Ka Hoe...[et al.]. 2. To improve the automatic car washing machine by Donny Lim Toh Seng...[et al.]. Nilai: INTI College Malaysia.

LIEW KA HOE, LIM JOON EU, SHUM WAI FOONG, NG SHYI HUEI, FU BIN YA, TAY CHEE SENG, and YEAM TEIK WOOI. To DESIGN and Build a Model of Compartment for Sorting Metel, Plastic and Paper for Recycling Purpose By Liew Ka Hoe...[et Al.]. 2. To Improve the Automatic Car Washing Machine By Donny Lim Toh Seng...[et Al.]. Nilai: INTI College Malaysia, 2003.

LIEW KA HOE, et al. To DESIGN and Build a Model of Compartment for Sorting Metel, Plastic and Paper for Recycling Purpose By Liew Ka Hoe...[et Al.]. 2. To Improve the Automatic Car Washing Machine By Donny Lim Toh Seng...[et Al.]. Nilai: INTI College Malaysia, 2003.