National Institute of Adult Education (England and Wales). Teaching adults. National Institute of Adult Education.
Chicago-referens (17:e uppl.)National Institute of Adult Education (England and Wales). Teaching Adults. Leicester: National Institute of Adult Education.
MLA-referens (9:e uppl.)National Institute of Adult Education (England and Wales). Teaching Adults. National Institute of Adult Education.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.