IMPORTANT SHIPPING INFORMATION: Sigma will be closed on 4 July 2025 in observance of the USA holiday. Book products will resume shipping on 7 July 2025. Jewelry products will resume shipping on 14 July 2025. We apologize for any inconvenience this may cause.
Achievement is the culture in which we are immersed, the air we breathe.
The Career Handoff helps healthcare and nurse leaders proactively preserve and pass on their valuable knowledge and wisdom to new generations.
The Influence of Psychological Trauma in Nursing helps nurses gain awareness and knowledge about trauma and recovery so they can heal and bring holistic healing to others.
Healthcare ethics help guide and influence the way physicians, nurses, and other members of the healthcare team care for patients and make decisions.