Mosby’s Family Practice Sourcebook: An Evidence-Based Approach to Care, Fourth Edition is the new edition of Dr. Ken Marshall’s Mosby’s Family Practice Sourcebook: An Evidence-Based Emphasis. The book will remain a quick reference tool for residents and general practitioners. It covers the current approaches and controversies in the prevention and treatment of a wide variety of problems encountered in office practice. It is also used as a study aid by medical students preparing for exams.