Pratya Binmudnee และผู้แต่งคนอื่นๆ. (2021) The development of the English vocabulary application on Android operating system for upper – primary students in five southern border provinces. <i>Interdisciplinary Research Review (IRR)</i>, <i>16</i>(3), 8-13.Pratya Binmudnee และผู้แต่งคนอื่นๆ. "The development of the English vocabulary application on Android operating system for upper – primary students in five southern border provinces". Interdisciplinary Research Review (IRR) 16 (2021):8-13.Pratya Binmudnee และผู้แต่งคนอื่นๆ. The development of the English vocabulary application on Android operating system for upper – primary students in five southern border provinces. Phetchaburi Rajabhat University:ม.ป.ท. 2021.