Salzman, Dieter. Untersuchungen zu den antiken Kieselmosaiken (DAI Archäologische Forschungen 10, Berlin, 1982). [Gordion mosaics: pp. 4, 6-8, 78, 93-94; Nos. 46-56]

Young, Rodney S. "Early Mosaics at Gordion" Expedition7 (Spring 1965) 4-13.