APA (7th ed.) Citation

Howe, C., Luthman, S., Ruthven, K., Mercer, N., Hofmann, R., Ilie, S., & Guardia, P. (2015). Rational Number and Proportional Reasoning in Early Secondary School: Towards Principled Improvement in Mathematics. Research in Mathematics Education, 17(1), 38. https://doi.org/10.1080/14794802.2015.1019914

Chicago Style (17th ed.) Citation

Howe, Christine, Stefanie Luthman, Kenneth Ruthven, Neil Mercer, Riikka Hofmann, Sonia Ilie, and Paula Guardia. "Rational Number and Proportional Reasoning in Early Secondary School: Towards Principled Improvement in Mathematics." Research in Mathematics Education 17, no. 1 (2015): 38. https://doi.org/10.1080/14794802.2015.1019914.

MLA (9th ed.) Citation

Howe, Christine, et al. "Rational Number and Proportional Reasoning in Early Secondary School: Towards Principled Improvement in Mathematics." Research in Mathematics Education, vol. 17, no. 1, 2015, p. 38, https://doi.org/10.1080/14794802.2015.1019914.