Permission to Use Sigma Logo

If you are an Sigma member, go to The Circle to download the chapter style guide and a JPEG file of the Sigma logo. If you would like a vector image of the logo or crest, complete this form and your request will be reviewed as soon as possible.

If you are not an Sigma member and would like to request use of Sigma's official logo, contact In your email, provide detailed information regarding your intended use. Permission to use the logo or crest is granted on a case-by-case basis, and reasonable notice should be given. Approvals are for one-time use only.

Sigma in the news   

Sigma launches the Evidence-Based Practice (EBP) Database Subscription

CINAHL Complete + Medline Complete + Sigma Repository = Access to Evidence

Sigma offers affordable access to scholarly literature through the new Evidence-Based Practice (EBP) Database Subscription. This annual database subscription, available to members and nonmembers, includes more than 6,000 nursing, medical, and allied health journals in EBSCO’s CINAHL Complete and Medline Complete databases, plus free, open access databases such as Business Source Index, ERIC, JSTOR Journals, and more. The EBP Database Subscription— unique to Sigma—allows users to search multiple databases through one user-friendly interface. 

Download and print an EBP Database Subscription explainer

Sigma has a lengthy history of supporting nursing research through research/EBP grants and conferences that feature the latest research and scholarship. This innovative new database subscription continues the organization’s focus on nursing research and scholarly endeavors. Sigma is the only organization offering this one-of-a-kind database subscription.

The Sigma EPB Database Subscription is US $200 for Sigma members and US $250 for non-members.

Subscribe to the Sigma EBP Database.
Note: You must login with your Sigma member ID and password. 
If you do not have a Sigma ID, you can create one.

The EBP Subscription is the top item available for purchase. 


CINAHL Complete Full Text Journal Coverage List*
MEDLINE Complete Full Text Journal Coverage List*

*Does not include open source journals, and repositories are included in the subscription at no additional charge.

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