1. Online retailers are desperate to stem a surging tide of returns;Ellis,2017
2. Anon, Procter & Gamble 2016 Annual Report, 2016, , (Accessed 27 January 2019).
3. Amazon advertising’s latest differentiator: Targeted sampling program;Weiss,2019
4. Physical product samples as a part of digital campaign–can you use it and how;Wysocka,2020
5. Amazon India offers customers product sampling experience for the very first time ahead of prime day’ 22;Amazon,2022