Filog, P. The Tengao custom of Bontoc: Its meaning and functions. Saint Louis University research journal.
Chicago-viite (17. p.)Filog, Pablo. "The Tengao Custom of Bontoc: Its Meaning and Functions." Saint Louis University Research Journal .
MLA-viite (9. p.)Filog, Pablo. "The Tengao Custom of Bontoc: Its Meaning and Functions." Saint Louis University Research Journal, .
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