Ardani, Windia Ari, Tri Nurhudi Sasono, and Faizatur Rohmi. 2020. “The Correlation Between Coping Mechanism And Anxiety Levels On Parents Having Mental Retardation Children In SLB BC PGRI Sumber Pucung”. Jurnal Midpro 12 (1):123-34. https://doi.org/10.30736/md.v12i1.156.