Não informado. (2004). Ethnological survey publications, Phillipine Islands. Bureau of Printing.
Chicago-referens (17:e uppl.)Não informado. Ethnological Survey Publications, Phillipine Islands. Manila: Bureau of Printing, 2004.
MLA-referens (8:e uppl.)Não informado. Ethnological Survey Publications, Phillipine Islands. Bureau of Printing, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.