Federal Reserve Bank of Atlanta and Federal Reserve Bank of Boston. "2018 Diary of Consumer Payment Choice : Weighting Information" in Survey and Diary of Consumer Payment Choice (December 2019). https://fraser.stlouisfed.org/title/7178/item/684746/content/pdf/frbatl_rdr_1903_dcpc-2018-sampling-weights, accessed on March 14, 2026.