H. Huck Ywih Ch'ng, O. Haruna Ahmed, S. Kassim, and N. Muhamad Ab Majid, “Co-composting of pineapple leaves and chicken manure slurry”, Int. J. Recycl. Org. Waste Agric., vol. 2, no. 1, Nov. 2013, doi: 10.1186/2251-7715-2-23.