APA   Click to copy
Ziegler, A., Peisl, T., & Raeside, R. (2023). Improving service quality through customer feedback {\textendash} the case of {NPS} in {IBM}'s training services. International Journal of Quality and Service Sciences, 15, 190–203.

Chicago/Turabian   Click to copy
Ziegler, Alexander, Thomas Peisl, and Robert Raeside. “Improving Service Quality through Customer Feedback {\Textendash} the Case of {NPS} in {IBM}'s Training Services.” International Journal of Quality and Service Sciences 15 (July 2023): 190–203.

MLA   Click to copy
Ziegler, Alexander, et al. “Improving Service Quality through Customer Feedback {\Textendash} the Case of {NPS} in {IBM}'s Training Services.” International Journal of Quality and Service Sciences, vol. 15, Emerald, July 2023, pp. 190–203.

@article{ziegler2023a,
  title = {Improving service quality through customer feedback {\textendash} the case of {NPS} in {IBM}'s training services},
  year = {2023},
  month = jul,
  journal = {International Journal of Quality and Service Sciences},
  pages = {190--203},
  publisher = {Emerald},
  volume = {15},
  author = {Ziegler, Alexander and Peisl, Thomas and Raeside, Robert},
  month_numeric = {7}
}