This guide (2nd ed.; 2016) is published by the Center for Presidential Transitions, Partnership for Public Service.
From the Description and Introduction:
This publication provides a comprehensive overview of the presidential transition process, complete with discussions of the components of a transition team, the work done by the outgoing administration and the roles of the various departments within government.
The material was drawn from a variety of sources, including interviews with participants in past transitions, archived materials that were developed as part of past transition operations, and scholarly studies on the subject of presidential transitions and the presidency. Individuals interviewed provided information on the basis of non-attribution, and direct quotes have been included with permission