Παραπομπή APA

Barrell,Ray, & Pain,Nigel. (1999). Innovation,investment and diffusion of technology in Europe. Camebridge University Press.

Παραπομπή Chicago Style

Barrell,Ray, και Pain,Nigel. Innovation,investment and Diffusion of Technology in Europe. New York: Camebridge University Press, 1999.

Παραπομπή MLA

Barrell,Ray, και Pain,Nigel. Innovation,investment and Diffusion of Technology in Europe. Camebridge University Press, 1999.