APA引文

Freeman, C. (1981). Technical innovation and national economic performance. Aalborg Unversity Press: Institute of production.

Trích dẫn kiểu Chicago

Freeman, C. Technical Innovation and National Economic Performance. Aalborg Unversity Press: Institute of production, 1981.

MLA引文

Freeman, C. Technical Innovation and National Economic Performance. Aalborg Unversity Press: Institute of production, 1981.

警告：這些引文格式不一定是100％准確.