Kojima, M. (2001). Breathing clean: Considering the switch to natural gas buses. Washington DC: The World Bank.
Dyfyniad Arddull ChicagoKojima, Masami. Breathing Clean: Considering the Switch to Natural Gas Buses. Washington DC: The World Bank, 2001.
Dyfyniad MLAKojima, Masami. Breathing Clean: Considering the Switch to Natural Gas Buses. Washington DC: The World Bank, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.