SASTROUTOMO, S.S., JURAIMI, A.S., KADIR, J., NAPIS, S. and TASRIF, A. 2011. MORPHOLOGICAL VARIATION OF THE ECOTYPES OF Echinochloa crus-galli var crus-galli (L). Beauv (Barnyard grass: Poaceae) IN MALAYSIA and INDONESIA. BIOTROPIA. 22 (Nov. 2011). DOI:https://doi.org/10.11598/btb.2004.0.22.206.