APA (7th ed.) Citation

Flesch, R. F. (1962). The art of readable writing. Collier Books.

Chicago Style (17th ed.) Citation

Flesch, Rudolph Franz. The Art of Readable Writing. New York: Collier Books, 1962.

MLA (9th ed.) Citation

Flesch, Rudolph Franz. The Art of Readable Writing. Collier Books, 1962.