Sams, Bert F. 1981. Ethnocultural identification and modernization in a Lao Song Dam village of Nakhon Pathom province : a report to the National Research Council of Thailand. S.l.:s.n.;
Sams, Bert F. (1981) Ethnocultural identification and modernization in a Lao Song Dam village of Nakhon Pathom province : a report to the National Research Council of Thailand (รายงานผลงานวิจัย). s.n.:S.l.
Sams, Bert F. Ethnocultural identification and modernization in a Lao Song Dam village of Nakhon Pathom province : a report to the National Research Council of Thailand. S.l.:s.n., 1981.
Sams, Bert F. (1981) Ethnocultural identification and modernization in a Lao Song Dam village of Nakhon Pathom province : a report to the National Research Council of Thailand (รายงานผลงานวิจัย). s.n.:S.l.