Focus questionhttps://symsksdss.ufuture.eu/tematres_sym/vocab/xml.php?skosTema=76en-ENKlink2024-04-20 20:33:48https://symsksdss.ufuture.eu:443/tematres_sym/vocab/SYMSITEStext/html Babbie, Earl R. The practice of social research. Cengage AU, 2020.

Lipsey, Mark W., and David B. Wilson. Practical meta-analysis. SAGE publications, Inc, 2001.

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