“Kompetisi Antara Ekotipe Echinochloa Crus-Galli Pada Beberapa Tingkat Populasi Dengan Padi Sawah (Competition of Echinochloa Crus-Galli Ecotypes at Several Populations Against Lowland Rice)”. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy), vol. 37, no. 3, June 2010, https://doi.org/10.24831/jai.v37i3.1236.