National Convention on Statistics PICC, Manila. (1991). Papers and proceedings: Joint conference on statistics, January 8-10, 1990, Philippine International Convention Center. s.n.
芝加哥风格引文National Convention on Statistics PICC, Manila. Papers and Proceedings: Joint Conference on Statistics, January 8-10, 1990, Philippine International Convention Center. [S.l: s.n, 1991.
MLA引文National Convention on Statistics PICC, Manila. Papers and Proceedings: Joint Conference on Statistics, January 8-10, 1990, Philippine International Convention Center. s.n, 1991.
警告：这些引文格式不一定是100％准确.