Pornpun Futrakul. 1989. The environmental history of pre-modern provincial towns in Siam to 1910. [S.l.]:Cornell University;
Pornpun Futrakul. (1989) The environmental history of pre-modern provincial towns in Siam to 1910 (รายงานผลงานวิจัย). Cornell University:[S.l.].
Pornpun Futrakul. The environmental history of pre-modern provincial towns in Siam to 1910. [S.l.]:Cornell University, 1989.
Pornpun Futrakul. (1989) The environmental history of pre-modern provincial towns in Siam to 1910 (รายงานผลงานวิจัย). Cornell University:[S.l.].