"What's Next for NFC". NATIONAL RETAIL FEDERATION (Press release). October 1, 2014. Archived from the original on October 6, 2014. Retrieved October 1, 2014.
"What's Next for NFC". NATIONAL RETAIL FEDERATION (Press release). October 1, 2014. Archived from the original on October 6, 2014. Retrieved October 1, 2014.