Septriandi, I. Syafri, Y. Adriana S, dan F. Ferdian. “Jurassic Sandstone Characteristic Of Bobong Formation In Taliabu Island, Eastern Indonesia: Outcrop And Petrography Observations”. Jurnal Geosains Terapan, vol. 2, no. 3, Februari 2021, hlm. 29, https://geosainsterapan.id/index.php/id/article/view/15.