1 - National Retail Federation
2 - Reuters, December 2020
3 - Inmar Intelligence research, Reuters, December 2020
4 - IFH Cologne
5 - IFH Cologne, Ecommerce News Europe, December 2020
6 - The Jakarta Post, January 2020
7 - Alibaba
8 - World Bank report, The Jakarta Post, January 2020
9 - World Bank
10 - Federal Aviation Administration
11 - Digital Commerce 360, December 2020
12 - MikMak
13 - Rachel Tipograph, Ecommerce News Europe, December 2020