Margaretha, H., E. Wigunawati, and R. Ernawati. “Descriptive Study on the Self-Concept Levels of Instagram Users Among Education Faculty Students at Kristen Indonesia University”. Edumaspul: Jurnal Pendidikan, Vol. 7, no. 2, Oct. 2023, pp. 3170-81, doi:10.33487/edumaspul.v7i2.6881.