Hodiyanto, M. T. Budiarto, R. Ekawati, G. Susanti, J. Kim, and E. Bonyah. “How Abstraction of a Pre-Service Teacher in Constructing Relationships Among Quadrilaterals”. Journal on Mathematics Education, vol. 15, no. 2, Feb. 2024, pp. 339-62, doi:10.22342/jme.v15i2.pp339-362.