CHATHAOKALOR1, D., LAO, Y., SITHIVOHAN, I., DAOVONGDEUAN, S. and PHOMLASABOUD, K. 2019. Effects of photoperiod on Growth and Yield of Flowering Chinese Cabbage (Brassica rapa var. parachinensis.). Souphanouvong University Journal Multidisciplinary Research and Development . 5, 1 (Jul. 2019), 51–60.