Cohen’s D is an effect size measure for t-tests. Rules for small, medium and large effects, formulas, power graphs and guidelines for SPSS.
How to Report Cohen's d in APA Style
Cohen's D (Statistics) - The Ultimate Guide
Cohen's D: Definition, Examples, Formulas - Statistics How To
Group and sample size
Cohen's D (Statistics) - The Ultimate Guide
Interpreting Cohen's d
New d3.js visualization: Interpreting Cohen's d effect size
What Is And How To Calculate Cohen's d?
Basic statistics