Noormala Abdullah & Samihah Abdul Latif (2016). Complex Number (2nd Edition).
Perak: Politeknik Sultan Azlan Shah
Intanku Salwa Binti Shamsudin, Asmarizan Binti Mat Esa, Noor Hidayah Binti Awang,
Norzaliza Binti Mohamed Nor & Rasyidah Binti Abd Rahman (2015). Engineering
Mathematics (Level 1). Melaka: Politeknik Merlimau
Nur Farhana Sharip, Nurulain Ahmad, Nur Elyani Musa & Haryani Hamid (2017).
Engineering Mathematics 1. Selangor: Oxford Fajar Sdn Bhd.
46 | P a g e
47 | P a g e