Purnamasari, E., M. Fanani, dan A. E. Harahap. “KADAR C-ORGANIK, NITROGEN, NILAI C/N RASIO AKHIR, NILAI PH, TEMPERATUR DAN LAMA NYALA API BIOGAS PADA C/N RASIO AWAL KOMBINASI KULIT NENAS DAN RUMEN YANG BERBEDA: Organic-C Content, Nitrogen Content, Final C/N Ratio Value, PH Value, Temperature, and Biogas Flame Duration at Initial C/N Ratios of Different Pineapple Peel and Rumen Combinations”. Prosiding Seminar Nasional Integrasi Pertanian Dan Peternakan, vol. 2, no. 1, Juli 2024, hlm. 193-04, https://semnasfpp.uin-suska.ac.id/index.php/snipp/article/view/32.