Ogden's Basic English : Word List – Alphabetic 850 [online]. Basic-English Institute, [cit. 2021-09-19]. Dostupné online. Archivované 2021-06-09 z originálu.
Ogden's Basic English : A General Introduction with Rules and Grammar [online]. Basic-English Institute, [cit. 2021-09-19]. Dostupné online. Archivované 2016-03-12 z originálu.
Ogden's Basic English : Rules of Grammar [online]. Basic-English Institute, [cit. 2021-09-19]. Dostupné online. Archivované 2016-05-13 z originálu.
talkingto.co.uk
Talking to George Orwell [online]. talkingto.co.uk, [cit. 2004-12-08]. Dostupné online. Archivované 2004-12-08 z originálu.
web.archive.org
Ogden's Basic English : Word List – Alphabetic 850 [online]. Basic-English Institute, [cit. 2021-09-19]. Dostupné online. Archivované 2021-06-09 z originálu.
Ogden's Basic English : A General Introduction with Rules and Grammar [online]. Basic-English Institute, [cit. 2021-09-19]. Dostupné online. Archivované 2016-03-12 z originálu.
Ogden's Basic English : Rules of Grammar [online]. Basic-English Institute, [cit. 2021-09-19]. Dostupné online. Archivované 2016-05-13 z originálu.
Talking to George Orwell [online]. talkingto.co.uk, [cit. 2004-12-08]. Dostupné online. Archivované 2004-12-08 z originálu.