(1971). The economics of technological change: Selected readings. Harmondsworth: Penguin.
Trích dẫn kiểu ChicagoThe Economics of Technological Change: Selected Readings. Harmondsworth: Penguin, 1971.
ציטוט MLAThe Economics of Technological Change: Selected Readings. Harmondsworth: Penguin, 1971.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.