Some good people that we work with and good sources of information:
http://3ps.org.uk/wp-content/uploads/2019/11/Better-Births-report-final.pdf
https://pubs.iied.org/6021IIED/
https://books.google.co.uk/books?hl=en&lr=&id=P7xjOUyySeYC&oi
https://www.iied.org/participatory-learning-action-pla
http://www.participatorymethods.org/
http://www.involve.org.uk/wp-content/uploads/2011/03/People-and-Participation.pdf