1. Integration in loosely coupled garment supply chains;Arroyo;J. Global Oper. Strategic Sourcing: Bingley,2018
2. Bolstorff, P., Robert, R., 2007. AMACOM-American Management Association, ISBN-13: 978-0-8144-0926-8.
3. Business and Financial Times, April 28, 2020. https://www.msn.com/en-za/news/other/covid-19-and-the-logistics-transportation-industry/ar-BB13kX6k.
4. Coyle, J.J., 2011. Transportation: A Supply Chain Perspective. Thomsen-South Western.
5. FreightWaves, Newstex Finance & Accounting Blogs, 2020-05-21.