APA (7th ed.) Citation

Heddens, J. W. (1974). Today's mathematics: A guide to concepts and methods in elementary school mathematics (3d ed.). Science Research Associates.

Chicago Style (17th ed.) Citation

Heddens, James W. Today's Mathematics: A Guide to Concepts and Methods in Elementary School Mathematics. 3d ed. Chicago: Science Research Associates, 1974.

MLA (9th ed.) Citation

Heddens, James W. Today's Mathematics: A Guide to Concepts and Methods in Elementary School Mathematics. 3d ed. Science Research Associates, 1974.