NELLIS JOSEPH G. (1997). ESSENCE OF THE ECONOMY. PRENTICE -HALL INTERNATIONAL; INC.
芝加哥风格引文NELLIS JOSEPH G. ESSENCE OF THE ECONOMY. NEW JERSEY;USA: PRENTICE -HALL INTERNATIONAL; INC, 1997.
MLA引文NELLIS JOSEPH G. ESSENCE OF THE ECONOMY. PRENTICE -HALL INTERNATIONAL; INC, 1997.
警告：这些引文格式不一定是100％准确.