APA (7th ed.) Citation

Joffrion, H. K., & Kulm, G. O. (2007). Conceptual and procedural understanding of algebra concepts in the middle grades. [Texas A&M University].

Chicago Style (17th ed.) Citation

Joffrion, Heather Kyle, and Gerald O. Kulm. Conceptual and Procedural Understanding of Algebra Concepts in the Middle Grades. [College Station, Tex.]: [Texas A&M University], 2007.

MLA (9th ed.) Citation

Joffrion, Heather Kyle, and Gerald O. Kulm. Conceptual and Procedural Understanding of Algebra Concepts in the Middle Grades. [Texas A&M University], 2007.