The Siam Society: Miscellaneous Articles Written for the JSS by His Late Highness Prince Damrong. The Siam Society, Bangkok, B.E. 2505 (1962). William J. Gedney, "A Possible Early Thai Route to the Sea", Journal of the Siam Society, Volume 76, 1988, pp.12-16.[1] (Arkistoitu – Internet Archive)
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The Siam Society: Miscellaneous Articles Written for the JSS by His Late Highness Prince Damrong. The Siam Society, Bangkok, B.E. 2505 (1962). William J. Gedney, "A Possible Early Thai Route to the Sea", Journal of the Siam Society, Volume 76, 1988, pp.12-16.[1] (Arkistoitu – Internet Archive)
