This book was written to provide information about the principles, process, and practice of counselor supervision for both clinical and administrative supervisors. The 12 chapters of the book are organized under three major headings. Part I, Counselor Supervision: Essentials for Training, consists of chapters 1 and 2. Chapter 1 includes the basic principles, roles, and functions involved in effective supervisory practice for administrative and clinical supervisors. Chapter 2 describes the essentials necessary for a supervisory relationship. Part II, Models of Supervision, includes five chapters: chapters 3 through 7 focus on the psychotherapeutic model, the behavioral model, the integrative model, the systems model, and a developmental model, respectively. Part III contains five chapters focusing on the practice of supervision. Chapter 8 illustrates the implementation of the developmental model into supervisory practice. Using case illustrations, chapter 9 describes experiential supervision. Chapter 10 focuses on group supervision, chapter 11 examines ethical principles in supervision, and chapter 12 presents a model for supervision training. References are included at the end of each chapter. (NB)