Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

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