Ray, G. F. (1984). The diffusion of mature technologies. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoRay, George F. The Diffusion of Mature Technologies. Cambridge: Cambridge University Press, 1984.
Deismireacht MLARay, George F. The Diffusion of Mature Technologies. Cambridge: Cambridge University Press, 1984.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.