1. APICS (2014) Supply chain operations reference model version 11.0. APICS 8430 West Bryn Mawr Ave, Suite 1000, Chicago, IL 60631, USA
2. BBC (2014) Production methods. GCSE Bitesize.
http://www.bbc.co.uk/schools/gcsebitesize/business/production/methodsofproductionrev1.shtml
. Accessed 20 Apr 2017
3. Bolstorff P, Rosenbaum R (2003) Supply chain excellence: a handbook for dramatic improvement using the SCOR model. AMACOM (American Management Association), New York
4. Christopher M (2016) Logistics and supply chain management. Pearson Education Limited, United Kingdom. ISBN 9781292083827
5. Croxton KL, Garcia-Dastugue JG, Lambert DM, Rogers DS (2001) The supply chain management process. Int J Logistics Manage 12(2):13–36