細節
PETERSON, Harold L. American Indian Tomahawks, New York, 1965; von Rosen, Count Eric. Ethnographical Research Work During the Swedish Chaco-Cordillera- Expedition 1901-1902, Stockholm, 1924; Doering, Heinrich. Old Peruvian Art, London, 1936; and Hentze, Carl. Objets rituels, Croyances et Dieux de la Chine Antique et de l'Amerique, Antwerp, 1936 (4)