Below you will find a complete set of details for 3 different references / citations that are related to the computation of probabilities (p-values) for a t-test.

Reference for Citing the Online Calculator

- Soper DS. t-Test Probability Calculator [Online Software]. Available from http://www.analyticscalculators.com. 2020.

References from the Scientific Literature

- Abramowitz M, Stegun IA. Handbook of mathematical functions: with formulas, graphs, and mathematical tables. Courier Corporation; 1964.
- Student. The probable error of a mean. Biometrika. 1908 Mar 1:1-25.