Kānsamrūat kānyāi thin kh̨ōng prachāk̨ōn khao sū Krung Thēp Mahā Nakh̨ōn læ parimonthon, Ph̨ō. S̨ō. 2527 = The Survey of migration into the Bangkok Metropolis and vicinity, 1984 (Samnakngān Sathiti h̄æng Chāt, Samnak Nāyok Ratthamontrī, 1985)