Świetla, K. 2018. Service Level Agreements and Key Performance Indicators in Accountancy Outsourcing. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie. 12(972) (May 2018), 57–68. DOI:https://doi.org/10.15678/ZNUEK.2017.0972.1204.