N. P. Cunha et al.,  "Relationship quality drives and outcomes: a systematic literature review approach", in Conf. book Proc. of 6th EuroMed Conf. of the EuroMed Academy of Business Research- Confronting Contemporary Business Challenges through Management Innovation, Demetris Vrontis, Yaakov Weber and Shlomo Tarba , Ed., EuroMed Press, 2013, pp. 764-778