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Below you will find a complete set of details for 2 different references / citations that are related to the computation of probability values for the difference between two slopes.

Reference for Citing the Online Calculator

- Soper, D.S. (2020). Significance of the Difference between Two Slopes Calculator [Software]. Available from http://www.danielsoper.com/statcalc

Reference from the Scientific Literature

- Cohen, J., Cohen, P., West, S.G., and Aiken, L.S. (2003). Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences (3rd edition). Mahwah, NJ: Lawrence Earlbaum Associates.

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