Smith, G. (1992). Right every time. Productivity & quality publishing.
Dyfyniad Arddull ChicagoSmith, Guy. Right Every Time. Madras: Productivity & quality publishing, 1992.
Dyfyniad MLASmith, Guy. Right Every Time. Productivity & quality publishing, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.