Barrell,Ray, & Pain,Nigel. (1999). Innovation,investment and diffusion of technology in Europe. Camebridge University Press.
استشهاد بنمط شيكاغوBarrell,Ray, و Pain,Nigel. Innovation,investment and Diffusion of Technology in Europe. New York: Camebridge University Press, 1999.
MLA استشهادBarrell,Ray, و Pain,Nigel. Innovation,investment and Diffusion of Technology in Europe. Camebridge University Press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.