Leadership requires technical and non-technical skills in different proportions depending on the projects William Gualber. Teams of self-motivated leaders are essential for driving and guiding successful projects. John C. Maxwell, author of The Degree Leader, explains the principles leaders can use to bring value and influence to and from anywhere in the organization, enabling them to lead up, lead across, and lead down Download Free PDF. John C. Maxwell-Lider De GradosJohn C. Maxwell-Lider De G