DJVU PDF Jacob, J.M. 1993, "An examination of the vowels and final consonants in correspondences between Pre-Angkor and Modern Khmer", in Cambodian Linguistics, Literature and History, ed. D.A. Smyth, pp. 87-102. School of Oriental and African Studies, University of London. cite.

DJVU PDF Jacob, J.M. 1993, "Sanskrit loanwords in Pre-Angkor Khmer", in Cambodian Linguistics, Literature and History, ed. D.A. Smyth, pp. 128-139. School of Oriental and African Studies, University of London. cite.

DJVU PDF Jacob, J.M. 1993, "Pre-Angkor Cambodia: evidence from the inscriptions in Khmer concerning the common people and their environment ", in Cambodian Linguistics, Literature and History, ed. D.A. Smyth, pp. 299-318. School of Oriental and African Studies, University of London. cite.