 Analysis of Boolean Functions by Ryan O'Donnell

Primary text: arxiv.org/pdf/2105.10386

Cited passages: Section 8.4, Margulis–Russo Formula, equations (8.8)–(8.9), printed pp. 224–225: derivative and biased-influence normalization. The book originally appeared in April 2014; the cited freely available edition is arXiv:2105.10386v1.