AMA Citation Guide
Websites

Reference List Format:

Number. Author AA or Organization. Title. Website Name. Month Day, Year. Updated Month Day, Year (if applicable). Accessed Month Day, Year. URL 

Reference List Example (with author):

15. Charlton G. Internal linking for SEO: examples and best practices. SearchEngineWatch. Accessed February 10, 2016. https://searchenginewatch.com/sew/how-to/2428041/internal-linking-for-seo-examples-and-best-practices

Reference List Example (no author):

16. Zika travel information. Centers for Disease Control and Prevention. January 26, 2016. Updated August 11, 2016. Accessed June 18, 2019. https://wwwnc.cdc.gov/travel/page/zika-travel-information