Q. How do I reference the ethical guidelines from BERA?

Using the Cite Them Right Harvard style:

British Educational Research Association (2018) Ethical guidelines for educational research. 4th edn. Available at: https://www.bera.ac.uk/researchers-resources/publications/ethical-guidelines-for-educational-research-2018 (Accessed: 6 March 2024).

Using APA 7th edition style: 

British Educational Research Association. (2018, June 20). Ethical guidelines for educational research. (4th ed.). https://www.bera.ac.uk/publication/ethical-guidelines-for-educational-research-2018

First citation (parenthetical): (British Educational Research Association [BERA], 2018)

First citation (narrative): British Educational Research Association (BERA, 2018)

Subsequent citation (parenthetical): (BERA, 2018)

Subsequent citation (narrative): BERA (2018)