APA (7th ed.) Citation

Underhill, R. G. (1972). Teaching elementary school mathematics. Charles E. Merrill Publ.

Chicago Style (17th ed.) Citation

Underhill, Robert G. Teaching Elementary School Mathematics. Charles E. Merrill Publ, 1972.

MLA (8th ed.) Citation

Underhill, Robert G. Teaching Elementary School Mathematics. Charles E. Merrill Publ, 1972.

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