APA引文

(1991). Abueva issues memo on economy measures in 1991. U.P. Newsletter.

芝加哥风格引文

"Abueva Issues Memo on Economy Measures in 1991." U.P. Newsletter 1991.

MLA引文

"Abueva Issues Memo on Economy Measures in 1991." U.P. Newsletter, 1991.

警告：这些引文格式不一定是100％准确.