एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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