(1981). 1981 U.S. industrial outlook for 200 industries with projections for 1985. Washington.
Trích dẫn kiểu Chicago1981 U.S. Industrial Outlook for 200 Industries With Projections for 1985. Washington, 1981.
MLA引文1981 U.S. Industrial Outlook for 200 Industries With Projections for 1985. Washington, 1981.
警告:這些引文格式不一定是100%准確.