Although the following article was published in 2012, I believe it is useful:
- Shiri D. Vivek, Sharon E. Beatty, and Robert M. Morgan (2012) Customer Engagement: Exploring Customer Relationships Beyond Purchase, Journal of Marketing Theory and Practice, vol. 20, no. 2 (spring 2012), pp. 127–145.
Dessart, L., Veloutsou, C. and Morgan-Thomas, A. (2016) Capturing consumer engagement: duality, dimensionality and measurement, Journal of Marketing Management, 32, 5-6, pp. 399-426.
Harrigan, P., Evers, U., Miles, M. and Daly, T. (2017) Customer engagement with tourism social media brands, Tourism Management, 59, pp. 597-609.
Maslowska, E., Malthouse, E. C. and Collinger, T. (2016) The customer engagement ecosystem, Journal of Marketing Management, 32, 5-6, pp. 469-501.
Pansari and Kumar (2017) is a good article with a strong framework. However, it seems that the article does not suggest a way to measure CE. I wonder if they are working on it!
JMR paper is good but the items are not suitable due to the context of the study. It looks at Employee Engagement (EE). I think these items can be useful if our study context is the influence of EE on the performance of retail customer service.
I just reviewed Kumar and Pansari (2016): Competitive Advantage Through Engagement. Journal of Marketing Research, 53:497-514 again. Study 1 and Table 1 in this article is very helpful.
Also, this study has successfully used that CE scale:
Prentice, C., & Loureiro, S. M. C. (2018). Consumer-based approach to customer engagement–The case of luxury brands. Journal of Retailing and Consumer Services, 43, 325-332.
I’m not sure if you still need recommendations on CE measurement, however the following work is really worth reading if you would plan to recognize behavioral view on CE, beyond purchase:
Verleye K., Gemmel P., and Rangarajan D.2014. Managing engagement behaviors in a network of customers and stakeholders: evidence from the nursing home sector. Journal of Service Research 17(1): 68-84.
I adopted some of the items in my own research, which may be also interesting for you:
Żyminkowska K. (2019) Why Do Customers Engage?. In: Customer Engagement in Theory and Practice. Palgrave Pivot, Cham.