Book excerpt: Foundational study of how institutions work and how leadership promotes them. Often cited in many fields and consistently assigned to classes in a variety of departments -- including sociology and business, and executive training in management and military leadership -- this book is considered to have virtually created the modern field of institutional-leadership management. It is still recognized as a lively and accessible presentation of the institutionalist school's answer to traditional "rationalist" approaches. Selznick's analysis goes beyond efficiency and traditional loyalty: he examines the more nuanced variables of effective leadership of organizations in business, education, government, the military, and labor. Quality, authorized ebook format includes linked notes and Contents and embedded pagination from print editions for continuity of referencing and classroom adoptions across all platforms.