Ariwibowo, M. F., Z. Wahab, R. Isnanta, and I. Isnurhadi. “Physical Evidence Promotion on Consumer Decisions in Using Bowling Sport Services”. International Journal of Social Sciences and Humanities, vol. 4, no. 3, Sept. 2020, pp. 22-28, doi:10.29332/ijssh.v4n3.445.