Resources offered by NEaT’s partner organizations:
https://www.iti.org.uk/language-services/advice-to-buyers
https://www.iso.org/obp/ui/#iso:std:iso:17100:ed-1:v1:en
https://www.editors.ca/hire/what-can-professional-editor-do-you
https://www.sense-online.nl/about/sense-publications/guidelines
https://www.metmeetings.org/en/how-to-choose-a-language-professional:799
https://ease.org.uk/publications/ease-toolkit-journal-editors/