Positively and negatively valenced customer engagement : the constructs and their organizational consequencesMarbach, Julia; Borghei Razavi, Niloofar; Lages, Cristiana R.; Hollebeek, Linda DesireeHandbook of research on customer engagement2019 / p. 291–310 : illhttps://doi.org/10.4337/9781788114899.00021https://www.ester.ee/record=b5290824*est