Cita APA (7th ed.)

Tumapang, S. L., Picache, U. G., & Manuel, E. A. (1977). The Cordillera: A preliminary bibliographic survey of materials on the Igorots. Institute of Library Science, University of the Philippines Diliman.

Cita Chicago (17th ed.)

Tumapang, Susan L., Ursula G. Picache, i E. Arsenio Manuel. The Cordillera: A Preliminary Bibliographic Survey of Materials on the Igorots. Quezon City: Institute of Library Science, University of the Philippines Diliman, 1977.

Cita MLA (9th ed.)

Tumapang, Susan L., et al. The Cordillera: A Preliminary Bibliographic Survey of Materials on the Igorots. Institute of Library Science, University of the Philippines Diliman, 1977.