Zainal Abidin Abd Hamid, Mashhor Mansor, and Azmi Man. 2007. “LIFE CYCLE AND MORPHOLOGICAL CHARACTERISTICS OF WEEDY RICE (ORYZA SATIVA COMPLEX, LOCALLY CALLED PADI ANGIN), A NOXIOUS WEED OF RICEFIELDS IN MALAYSIA”. Tropical Life Sciences Research 18 (1): 55–79. https://ejournal.usm.my/tlsr/article/view/tlsr_vol18-no-1-2007_6.