Resources for regulators

Returning to the Roots of Culture: A Review and Re-Conceptualization of Safety Culture (Available from Science Direct)
This toolkit has been created for use in the rail industry. The toolkit contains information about safety culture and provides registered users with assessment tools and other resources. 

Ethics, Risks, and Safety Culture: Reflections on Safety Culture and Beyond (Available from Taylor and Francis Publishing)
This source discusses how safety culture and societal culture played a role in the Fukushima Nuclear Power Plant accident.