Flesch, R. F. (1974). The art of readable writing: With the Flesch readability formula (25th anniversary ed., rev. and enl.). Harper & Row.
Chicago-referens (17:e uppl.)Flesch, Rudolf Franz. The Art of Readable Writing: With the Flesch Readability Formula. 25th anniversary ed., rev. and enl. New York: Harper & Row, 1974.
MLA-referens (9:e uppl.)Flesch, Rudolf Franz. The Art of Readable Writing: With the Flesch Readability Formula. 25th anniversary ed., rev. and enl. Harper & Row, 1974.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.