Norazila Md Posdzi. (2008). Design the hardware for teaching aid: Ball sorter using PLC. Universiti Teknikal Malaysia Melaka.
Chicago-viite (17. p.)Norazila Md Posdzi. Design the Hardware for Teaching Aid: Ball Sorter Using PLC. Durian Tunggal: Universiti Teknikal Malaysia Melaka, 2008.
MLA-viite (8. p.)Norazila Md Posdzi. Design the Hardware for Teaching Aid: Ball Sorter Using PLC. Universiti Teknikal Malaysia Melaka, 2008.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.