Pamintuan, A. M. (1991). Malacañang accepts Ampil resignation / Ana Marie Pamintuan. Philippine Star.
芝加哥风格引文Pamintuan, Ana Marie. "Malacañang Accepts Ampil Resignation / Ana Marie Pamintuan." Philippine Star 1991.
MLA引文Pamintuan, Ana Marie. "Malacañang Accepts Ampil Resignation / Ana Marie Pamintuan." Philippine Star, 1991.
警告：这些引文格式不一定是100％准确.