APA aipamena

(1971). The economics of technological change: Selected readings. Harmondsworth: Penguin.

Chicago Style aipamena

The Economics of Technological Change: Selected Readings. Harmondsworth: Penguin, 1971.

MLA aipamena

The Economics of Technological Change: Selected Readings. Harmondsworth: Penguin, 1971.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.