References

Links:

  • https://www.ecommerceceo.com/learn/what-is-print-on-demand/
  • https://www.youtube.com/watch?v=YqCkHZnX8Ho
  • https://www.youtube.com/watch?v=gkTx78XpNu4

Individual theory research links:

  • https://www.youtube.com/watch?v=vI5GmAIUxvo
  • https://uddoktahoi.com/summary-of-print-on-demand/