Güterbock, Hans G. "Seals and Sealings in Hittite Lands," pp. 51-63 in Keith DeVries (Ed.), From Athens to Gordion: The Papers of a Memorial Symposium for Rodney S. Young (Philadelphia, University Museum Papers 1, 1980).

Porada, Edith. "Measurements and Photographs of the Seals Found in Tarsus and Gordion" Yearbook of the American Philosophical Society (1956) 351- 353.