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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 variances for indirect effects in mediation models.

Reference for Citing the Online Calculator

- Soper, D.S. (2021). Variance Calculator for an Indirect Mediation Effect [Software]. Available from https://www.danielsoper.com/statcalc

Reference from the Scientific Literature

- Sobel, M. E. (1982). Asymptotic confidence intervals for indirect effects in structural equation models. Sociological Methodology, Vol. 13, pp. 290-312.

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