Liana, Y.R., Fianti, F. and Nurbaiti, U. 2021. Study of Sun Protection Factor (SPF) Batik Textile Fabric on Solar Radiation in Pekalongan. Jurnal Penelitian Fisika dan Aplikasinya (JPFA). 11, 1 (Jul. 2021), 39–49. DOI:https://doi.org/10.26740/jpfa.v11n1.p39-49.