Cita APA (7th ed.)
Flesch, R. (1949). The art of readable writing. Harper.
Cita Chicago (17th ed.)
Flesch, Rudolf. The Art of Readable Writing. New York: Harper, 1949.
Cita MLA (9th ed.)
Flesch, Rudolf. The Art of Readable Writing. Harper, 1949.
Atenció: Aquestes cites poden no estar 100% correctes.