APA Edition Citation

Sumner, W. L. (1938). Teaching of arithmetic and elementary mathematics. Blackwell.

Chicago Edition Citation

Sumner, W. L. Teaching of Arithmetic and Elementary Mathematics. Oxford: Blackwell, 1938.

MLA Edition Citation

Sumner, W. L. Teaching of Arithmetic and Elementary Mathematics. Blackwell, 1938.

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