This book of references was developed to assist users in learning more about the greening of the world of work. References are provided for each of the 12 sectors of the green economy identified by the O*NET Project, as well as the green economy as a whole. These articles, books, trade publications, technical reports, and websites were used to define the green economy and green economic sectors; and identify and define different types of green occupations. To keep up with the changing green economy, quarterly updates of this important reference will be made available.