Some English Style Guidelines

https://um.dk/media/wm5hen03/mfa-english-language-style-guide_2025.pdf

https://www.utwente.nl/en/language-centre/translation-editing-services/english-styleguide/gender/

https://apastyle.apa.org/style-grammar-guidelines/grammar/singular-they

https://www.europarl.europa.eu/cmsdata/151780/GNL_Guidelines_EN.pdf

https://knowledge-centre-translation-interpretation.ec.europa.eu/sites/default/files/ckeditor5-files/styleguide_english_dgt_en.pdf