Elianora, D., Sutardjo, I., & Rianto, B. U. (2013). Ukuran kranial dan indeks sefalik pada anak retardasi mental (Cranial size and cephalic index of mentally retarded children). Dental Journal, 46(3), 167–172. https://doi.org/10.20473/j.djmkg.v46.i3.p167-172