Table 2.

Consumer theory with high application frequency.

Theory	Authors
TRA	Policarpo and Aguiar [28]; Zhao et al. [32]
TPB	Xu et al. [7]; Patel et al. [8]; Xu et al. [9]; Carfora et al. [26]; Setyawan et al. [33]; Choi and Johnson [34]; Sreen et al. [35]; Qi and Ploeger [36]; Liobikiene et al. [37]; Yadav and Govind [38]; Hsu et al. [39]; Hojjat and Behnaz [40]; Madeline et al. [41]; Paul et al. [42]; Sultan et al. [43]; Johe and Bhullar [44]; Sharma and Foropon [45]
VAB	Cheung and To [6]; Trivedi et al. [10]; Degirmenci and Breitner [14]; Kathleen et al. [30]; Shin et al. [46]; Tan et al. [47]; Lee et al. [48]; Woo and Kim [49]
NAM	Yu et al. [50]
VBN	Han et al. [51]; Kim et al. [52]
ABC	Silvia and Maria [5]; Chekima et al. [12]; Myriam et al. [53]; Megavannan et al. [54]; Sergio et al. [55]; Zhang et al. [56]