APA (7th ed.) Citation

Modley, R. (1937). How to use pictorial statistics. Harper.

Chicago Style (17th ed.) Citation

Modley, Rudolf. How to Use Pictorial Statistics. New York: Harper, 1937.

MLA (9th ed.) Citation

Modley, Rudolf. How to Use Pictorial Statistics. Harper, 1937.

Warning: These citations may not always be 100% accurate.