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 chi-square test.

Reference for Citing the Online Calculator

- Soper DS. Chi-Square Test Probability Calculator [Online Software]. Available from https://www.analyticscalculators.com. 2021.

References from the Scientific Literature

- Abramowitz M, Stegun IA. Handbook of mathematical functions: with formulas, graphs, and mathematical tables. Courier Corporation; 1964.
- Johnson N, Kotz S. Distributions in Statistics: Continuous Univariate Distributions, John Wiley & Sons, Hoboken, NJ. 1970.