The only nursing research and theory book with primary works by the original theorists! Noted nursing scholars explore the historical and contemporary theories that are the foundation of nursing practice today. The 4th Edition of this popular book meets the needs of today’s students with an expanded focus on the middle range theories and practice models that link theory to clinical practice. You’ll explore their role in the real-world and learn how they are used to research and test the interventions with the best outcomes. Redeem the Plus Code inside new, printed texts to access your DavisPlus online resources, including the Davis Digital Version that lets you access the complete text online. You’ll also have access to a wealth of learning and practice resources.