According to Cochrane Collaboration: 

A systematic review attempts to identify, appraise and synthesize all the empirical evidence that meets pre-specified eligibility criteria to answer a specific research question. Researchers conducting systematic reviews use explicit, systematic methods that are selected with a view aimed at minimizing bias, to produce more reliable findings to inform decision making.

• Booth, A., Sutton, A., Clowes, M., & Martyn-St James, M. (2022). Systematic approaches to a successful literature review (Third ed.). SAGE. 
• Centre for Reviews and Disemination. (2009). Systematic Reviews. University of York.
• Gough, D., Oliver, S., & Thomas, J. (2017). An introduction to systematic reviews  (Second edition). Sage.