Harvard is the reference style recommended at the School of Social Work
Example of reference to a book:
Payne, Malcolm (2014). Modern social work theory. 4. ed. Basingstoke: Palgrave Macmillan.
Example of reference to an article:
Eliassi, Barzoo (2017) Conceptions of immigrant integration and racism among social workers in Sweden, Journal of Progressive Human Services, 28 (1): 6-35