Philippines. Office of the President. Presidential Management Staff. (1987). Ethnolinguistic groups in the Cordilleras (SIC). [publisher not identified].
芝加哥风格引文Philippines. Office of the President. Presidential Management Staff. Ethnolinguistic Groups in the Cordilleras (SIC). [Place of publication not identified]: [publisher not identified], 1987.
MLA引文Philippines. Office of the President. Presidential Management Staff. Ethnolinguistic Groups in the Cordilleras (SIC). [publisher not identified], 1987.
警告：这些引文格式不一定是100％准确.