I. S. Alnusayan and M. S. Al-Salouli, “The Effectiveness of Sheltered Instruction Observation Protocol (SIOP) Model of Developing Mathematical Achievement in Preparatory Year Female Students at Al-Imam Mohammad Ibn Saud Islamic University”, JEPS, vol. 4, no. 25, pp. 113–93, Jul. 2020, doi: 10.26389/AJSRP.E180220.