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 the form included in the style guide 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's journals again recognized as top-10 nursing journals

Sigma is pleased to share that both of its peer-reviewed journals are again ranked in the top 10 by the 2018 Journal Citation Reports® published by Clarivate Analytics.

Sigma’s Journal of Nursing Scholarship (JNS), edited by Susan Gennaro, PhD, RN, FAAN, is ranked 3rd among nursing journals, with an impact factor of 2.540.

Worldviews on Evidence-Based Nursing (Worldviews), edited by Bernadette Mazurek Melnyk, PhD, RN, CPNP/PMHNP, FAANP, FNAP, FAAN, is ranked 7th, with an impact factor of 2.500.

Both the JNS and Worldviews are free online to Sigma members as a membership benefit.

Learn more about Sigma's journals.