APA (7th ed.) Citation

Butts, T. (1973). Problem solving in mathematics: Elementary number theory and arithmetic. Scott, Foresman and Company.

Chicago Style (17th ed.) Citation

Butts, Thomas. Problem Solving in Mathematics: Elementary Number Theory and Arithmetic. Glenview, Illinois: Scott, Foresman and Company, 1973.

MLA (9th ed.) Citation

Butts, Thomas. Problem Solving in Mathematics: Elementary Number Theory and Arithmetic. Scott, Foresman and Company, 1973.