Παραπομπή σε μορφή APA (7η εκδ.)

Learning Systems. (1968). The elements of injection moulding of thermoplastics: A teaching programme prepared for the plastics institute by learning systems limited. Maclaren and sons.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Learning Systems. The Elements of Injection Moulding of Thermoplastics: A Teaching Programme Prepared for the Plastics Institute by Learning Systems Limited. London: Maclaren and sons, 1968.

Παραπομπή σε μορφή MLA (8th εκδ.)

Learning Systems. The Elements of Injection Moulding of Thermoplastics: A Teaching Programme Prepared for the Plastics Institute by Learning Systems Limited. Maclaren and sons, 1968.