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Below you will find a complete set of details for 3 different references / citations that are related to the computation of a-priori sample size values for a t-test.

Reference for Citing the Online Calculator

- Soper, D.S. (2020). A-priori Sample Size Calculator for Student t-Tests [Software]. Available from http://www.danielsoper.com/statcalc

References from the Scientific Literature

- Abramowitz, M. and Stegun, I.A., eds. (1965). Handbook of Mathematical Functions. New York, NY: Dover.
- Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd Edition). Hillsdale, NJ: Lawrence Earlbaum Associates.

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