Sari, Y. M., & Valentino, E. (2017). An Analysis of Students Error In Solving PISA 2012 And Its Scaffolding. Universitas Muhammadiyah Surakarta.
芝加哥风格引文Sari, Yurizka Melia, 与 Erik Valentino. An Analysis of Students Error In Solving PISA 2012 And Its Scaffolding. Universitas Muhammadiyah Surakarta, 2017.
MLA引文Sari, Yurizka Melia, 与 Erik Valentino. An Analysis of Students Error In Solving PISA 2012 And Its Scaffolding. Universitas Muhammadiyah Surakarta, 2017.
警告：这些引文格式不一定是100％准确.