Shanks, M. (1967). The innovators: The economics of technology. Penguin.
Lua i Stíl Chicago (17ú heag.)Shanks, Michael. The Innovators: The Economics of Technology. [Harmondsworth]: Penguin, 1967.
Lua MLA (9ú heag.)Shanks, Michael. The Innovators: The Economics of Technology. Penguin, 1967.
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