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Statistics Korea. (October 24, 2016). Average number of hours middle school students spent on studying per day in South Korea from 1999 to 2014, by gender [Graph]. In Statista. Retrieved April 21, 2021, from https://www.statista.com/statistics/645232/south-korea-average-study-hours-of-middle-school-students/
Statistics Korea. "Average number of hours middle school students spent on studying per day in South Korea from 1999 to 2014, by gender." Chart. October 24, 2016. Statista. Accessed April 21, 2021. https://www.statista.com/statistics/645232/south-korea-average-study-hours-of-middle-school-students/
Statistics Korea. (2016). Average number of hours middle school students spent on studying per day in South Korea from 1999 to 2014, by gender. Statista. Statista Inc.. Accessed: April 21, 2021. https://www.statista.com/statistics/645232/south-korea-average-study-hours-of-middle-school-students/
Statistics Korea. "Average Number of Hours Middle School Students Spent on Studying per Day in South Korea from 1999 to 2014, by Gender." Statista, Statista Inc., 24 Oct 2016, https://www.statista.com/statistics/645232/south-korea-average-study-hours-of-middle-school-students/
Statistics Korea, Average number of hours middle school students spent on studying per day in South Korea from 1999 to 2014, by gender Statista, https://www.statista.com/statistics/645232/south-korea-average-study-hours-of-middle-school-students/ (last visited April 21, 2021)
