Zakaria, Z. B., S. B. Zakaria, A. H. B. Khalid, and M. A. B. Mohd Ishak. “INDUCTION OF CALLUS FORMATION FROM DIFFERENT PARTS OF Citrus Grandis (OSBECK) FLOWERS”. BIOTROPIA, vol. 17, no. 1, Nov. 2010, doi:10.11598/btb.2010.17.1.32.