Raingan phon kansamruat `utsahakam, Pho. So. 2532, Krung Thep Maha Nakhon, Nonthaburi, Pathum Thani, lae Samut Prakan = Report of the 1989 industrial survey. Bangkok Metropolis, Nonthaburi, Pathum Thani, and Samut Prakan. (Samnakngan Sathiti haeng Chat, Samnak Nayok Ratthamontri,, 1990)