Oka, H. I. (1988). Origin of cultivated rice. Tokyo: Japan Scientific Societies.
Dyfyniad Arddull ChicagoOka, H. I. Origin of Cultivated Rice. Tokyo: Japan Scientific Societies, 1988.
Dyfyniad MLAOka, H. I. Origin of Cultivated Rice. Tokyo: Japan Scientific Societies, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.