Warawut Chootummatouch และ Pathom Maneenit; Charu Chaikwang; Wittayawat Kunchara Na Ayuttaya. (2000) Yield Trial of Broccoli and Cabbsage Grown at Hygenic Fresh Vegetables during Rainy Season in Songkhla. <i>Thai Agricultural Research Journal</i>, <i>18</i>(1), 31-44.Warawut Chootummatouch และ Pathom Maneenit; Charu Chaikwang; Wittayawat Kunchara Na Ayuttaya. "Yield Trial of Broccoli and Cabbsage Grown at Hygenic Fresh Vegetables during Rainy Season in Songkhla". Thai Agricultural Research Journal 18 (2000):31-44.Warawut Chootummatouch และ Pathom Maneenit; Charu Chaikwang; Wittayawat Kunchara Na Ayuttaya. Yield Trial of Broccoli and Cabbsage Grown at Hygenic Fresh Vegetables during Rainy Season in Songkhla. Department of Agriculture:ม.ป.ท. 2000.