Zaied, B.K., M.N.I. Siddique, A.W. Zularisam, M.F. Ahmad, and Y.M. Salih. 2019. “Biomethane Production from Anaerobic Codigestion of Palm Oil Mill Effluent With Cattle Manure: A Review”. Asian Journal of Chemistry 31 (11):2413-24. https://doi.org/10.14233/ajchem.2019.22196.