Tolong jelaskan mengenai Galeria Ossuary dari Wamba, Valladolid

Del Arco y Garay, Richard (1954.) 'XII'. In Jerónimo Zurita Institute. Higher Council for Scientific Research. Graves of the Royal House of Castile. Madrid. p. 168.

Elorza, John C.; Lourdes Vaquero, Belen Castillo, Marta Black (1990). Castile and León. Ministry of Culture and Social Welfare, ed. Pantheon Real de las Huelgas de Burgos. The burials of the kings of León and Castile (2nd edition). Editorial EVERGRAFICAS SA p. 57.  .