Παραπομπή σε μορφή APA (7η εκδ.)

Norwahida Binti Zakaria. (2016). The effect of recycling to the properties of different brands of polyethylene terephthalate (pet) bottle. School of Material Engineering, University Malaysia Perlis.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Norwahida Binti Zakaria. The Effect of Recycling to the Properties of Different Brands of Polyethylene Terephthalate (pet) Bottle. Perlis, Malaysia: School of Material Engineering, University Malaysia Perlis, 2016.

Παραπομπή σε μορφή MLA (8th εκδ.)

Norwahida Binti Zakaria. The Effect of Recycling to the Properties of Different Brands of Polyethylene Terephthalate (pet) Bottle. School of Material Engineering, University Malaysia Perlis, 2016.