Παραπομπή APA

Johnson, P. S. (1975). The economics of invention and innovation: With a case study of the development ofthe Hovercraft. London: Martin Robertson.

Παραπομπή Chicago Style

Johnson, P. S. The Economics of Invention and Innovation: With a Case Study of the Development Ofthe Hovercraft. London: Martin Robertson, 1975.

Παραπομπή MLA

Johnson, P. S. The Economics of Invention and Innovation: With a Case Study of the Development Ofthe Hovercraft. London: Martin Robertson, 1975.

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