Rajabipoor, Alireza, Arjmandi, Hossein, afsharzadeh, niloofar. The Effect of Positive Psychological Capital Dimensions on Organizational Citizenship Behaviors: The mediating roles of Psychological Contracts. Knowledge & Research in Applied Psychology. 2022;23(2):239-250. doi:10.30486/jsrp.2020.572948.1425