Williams, B. R. (1967). Technology, investment and growth. London: Chapman and Hall.
Dyfyniad Arddull ChicagoWilliams, B. R. Technology, Investment and Growth. London: Chapman and Hall, 1967.
Dyfyniad MLAWilliams, B. R. Technology, Investment and Growth. London: Chapman and Hall, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.