APA (7th ed.) Citation

Flesch, R. (1955). Why Johnny can't read--and what you can do about it ([1st ed.].). Harper.

Chicago Style (17th ed.) Citation

Flesch, Rudolf. Why Johnny Can't Read--and What You Can Do About It. [1st ed.]. New York: Harper, 1955.

MLA (9th ed.) Citation

Flesch, Rudolf. Why Johnny Can't Read--and What You Can Do About It. [1st ed.]. Harper, 1955.