Looking for Sigma books, jewelry, gifts, apparel, books, and CNE?  You've come to the right place!

All Sigma products are available through our e-commerce website, Sigma Marketplace.  Sign in here with your Sigma login to receive member discounts.  


Sigma Books

Sigma Jewelry

Give yourself the gift you've earned! Society rings, bracelets, pendants, and more!

Sigma Apparel

Sigma Apparel

Proudly wear Sigma embellished apparel for our members and friends of the society!

Sigma Gifts

Sigma Gifts

Show your support for Sigma. Purchase a keepsake for yourself or your colleagues!


STTI Books

Sigma Books

Explore books published by Sigma — both inspirational and scholarly topics.

Reflections on Nursing Leadership

Sigma CNE

Earn CNE contact hours through Sigma's newly designed online courses and programs.

Sigma Marketplace, formerly known as Nursing Knowledge International, is a subsidiary of Sigma and is the distributor of all Sigma merchandise, books, and continuing nursing education (CNE).

What's New

Proliability Insurance 
Professional liability insurance for yourself, your family, and your career.

Bank of America® Cash Rewards card
Apply today and contribute to nursing research!


BOA savings account