הערות

Andreas Eggert, Lena Steinhoff, and Carina Witte, "Gift Purchases as Catalysts . 9 for Strengthening Customer‑Brand Relationships," Journal of Marketing 83, no . 5 September 2019 ) : 115 ‑ 132 ( . Rex Yuxing Du, Wagner A . Kamakura, and Carl F . Mela, "Size and Share of . 10 Customer Wallet," Journal of Marketing 71, no . 2 ( April 2007 ) : 94 ‑ 113 . Sterling A . Bone et al . , "‘Mere Measurement Plus’ : How Solicitation of Open‑Ended . 11 Positive Feedback Influences Customer Purchase Behavior," Journal of Marketing Research 54, no . 1 ( February 2017 ) : 156 ‑ 170 . Utpal M . Dholakia and Vicki G . Morwitz, "The Scope and Persistence of . 12 Mere‑Measurement Effects : Evidence from a Field Study of Costumer Satisfaction Measurement," Journal of Consumer Research 29, no . 2 ( September 2002 ) : 167 ‑ 159 . The Big Book of Experimentation, Optimizely, 2017 . . 13 Alison Wood Brooks and Leslie K . John, "The Surprising Power of Questions," . 14 Harvard Business Review, May ‑ June 2018 ...  To the book