Jamison is 2023–24 chair of ALA’s Ethnic & Multicultural Information Exchange Roundtable, and though she intends this volume for those working with children’s or young adult collections, her book is applicable to all library types. In part 1 Jamison reviews the background of diversity inequities in libraries and the need for inclusive policies. In part 2, she presents her Jamison Measure of Diversity (J-MOD), which she created to analyze how diversity is manifested in collection development policy statements. Jamison provides step-by-step instructions for using the J-MOD, shows how it can be used to identify the policy type, and offers suggestions for “increasing diversity language within policies in terms of both presence and frequency” (p. 94). The volume includes a chapter on writing inclusive policies. All chapters provide objectives, definitions of key terms, reflection questions, and references. Tables and charts integrated throughout the text enhance its readability. Recommended. Graduate students, professionals.