APA ציטוט

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

Trích dẫn kiểu Chicago

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

ציטוט MLA

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