APA (7th ed.) Citation

Johanson, E. J. D. (1972). A Ninth Grade Piagetian Mathematics Curriculum.

Chicago Style (17th ed.) Citation

Johanson, Emma Jane Dixon. A Ninth Grade Piagetian Mathematics Curriculum. 1972.

MLA (9th ed.) Citation

Johanson, Emma Jane Dixon. A Ninth Grade Piagetian Mathematics Curriculum. 1972.

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