Verora, L. (1982). Unreached peoples '82: Reaching the Igorots. World Vision Philippines.
Chicago Style (17. basım) AtıfVerora, L.P. Unreached Peoples '82: Reaching the Igorots. Quezon City: World Vision Philippines, 1982.
MLA (9th ed.) AtıfVerora, L.P. Unreached Peoples '82: Reaching the Igorots. World Vision Philippines, 1982.
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