(1991). Inventions award marks NEC's 13th anniversary. U.P. Newsletter.
Chicago Style (17th ed.) Citation"Inventions Award Marks NEC's 13th Anniversary." U.P. Newsletter 1991.
MLA引文"Inventions Award Marks NEC's 13th Anniversary." U.P. Newsletter, 1991.
警告：這些引文格式不一定是100％准確.