Firmansyah, R. Arizal, and R. Y. Perry Burhan. “Analisis Aspek Molekuler Biomarka Alkana Bercabang Core Badak 1 208 Muara Badak, Kutai Kartanegara, Kalimantan Timur”. Journal of Natural Sciences and Mathematics Research, vol. 1, no. 1, Dec. 2022, pp. 26-29, https://journal.walisongo.ac.id/index.php/JNSMR/article/view/481.