Cita APA (7th ed.)

Philippines. Office of the President. Presidential Management Staff. (1987). Ethnolinguistic groups in the Cordilleras (SIC). [publisher not identified].

Cita Chicago (17th ed.)

Philippines. Office of the President. Presidential Management Staff. Ethnolinguistic Groups in the Cordilleras (SIC). [Place of publication not identified]: [publisher not identified], 1987.

Cita MLA (9th ed.)

Philippines. Office of the President. Presidential Management Staff. Ethnolinguistic Groups in the Cordilleras (SIC). [publisher not identified], 1987.