Wulff, I. (1962). Burial customs among the Yakan, a muslim people in the Southern Philippines. s.n.].
Chicago-referens (17:e uppl.)Wulff, Inger. Burial Customs Among the Yakan, a Muslim People in the Southern Philippines. [Denmark: s.n.], 1962.
MLA-referens (9:e uppl.)Wulff, Inger. Burial Customs Among the Yakan, a Muslim People in the Southern Philippines. s.n.], 1962.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.