Alexander Leopold Watts. (2011) Liberal democracy and interstate peace. <i>Rangsit Journal of Arts and Sciences</i>, <i>1</i>(2), 89-103.Alexander Leopold Watts. "Liberal democracy and interstate peace". Rangsit Journal of Arts and Sciences 1 (2011):89-103.Alexander Leopold Watts. Liberal democracy and interstate peace. Rangsit University:ม.ป.ท. 2011.