Παραπομπή APA

Norris, K., & Vaizey, J. (1973). The economics of research and technology. George Allen and Unwin.

Παραπομπή Chicago Style

Norris, Keith, και John Vaizey. The Economics of Research and Technology. London: George Allen and Unwin, 1973.

Παραπομπή MLA

Norris, Keith, και John Vaizey. The Economics of Research and Technology. George Allen and Unwin, 1973.