Podcast interview with the NeuroLeadership Institute, New York, on how to create cultures of speaking up within organizations:

https://neuroleadership.com/podcast/create-cultures-of-speaking-up-with-dr-mona-weiss-and-khalil-smith/

Featured article in Strategy and Business on how organizations can foster speaking up: 

https://www.strategy-business.com/article/Create-a-workplace-where-everyone-feels-comfortable-speaking-up?gko=7c8d3