(1975). A Study of the evolution of concentration in the mechanical engineering sector for the United Kingdom. Luxembourg: Commission of the European Communities.
Trích dẫn kiểu ChicagoA Study of the Evolution of Concentration in the Mechanical Engineering Sector for the United Kingdom. Luxembourg: Commission of the European Communities, 1975.
MLA引文A Study of the Evolution of Concentration in the Mechanical Engineering Sector for the United Kingdom. Luxembourg: Commission of the European Communities, 1975.
警告：这些引文格式不一定是100％准确.