APA (7th ed.) Citation

Monroe, W. S. How pupils solve problems in arithmetic. University of Illinois Press.

Chicago Style (17th ed.) Citation

Monroe, Walter S. How Pupils Solve Problems in Arithmetic. Illinois: University of Illinois Press.

MLA (9th ed.) Citation

Monroe, Walter S. How Pupils Solve Problems in Arithmetic. University of Illinois Press.

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