Book 36, chapter 17, in The Natural History of Pliny, translated by John Bostock and Henry Thomas Riley, Volume 6, pages 336–337 (London: H. G. Bohn, 1857).[2] (页面存档备份,存于互联网档案馆)
Coxill, David (1998). "The Riddle of the Sphinx", InScription: Journal of Ancient Egypt, 2 (Spring 1998), 17; cited in Schoch, Robert M. (2000). "New Studies Confirm Very Old Sphinx" (页面存档备份,存于互联网档案馆) in Dowell, Colette M. (ed). Circular Times.
Coxill, David (1998). "The Riddle of the Sphinx", InScription: Journal of Ancient Egypt, 2 (Spring 1998), 17; cited in Schoch, Robert M. (2000) [1] (页面存档备份,存于互联网档案馆). "New Studies Confirm Very Old Sphinx" in Dowell, Colette M. (ed). Circular Times.
Coxill, David (1998). "The Riddle of the Sphinx", InScription: Journal of Ancient Egypt, 2 (Spring 1998), 17; cited in Schoch, Robert M. (2000). "New Studies Confirm Very Old Sphinx" (页面存档备份,存于互联网档案馆) in Dowell, Colette M. (ed). Circular Times.
Coxill, David (1998). "The Riddle of the Sphinx", InScription: Journal of Ancient Egypt, 2 (Spring 1998), 17; cited in Schoch, Robert M. (2000) [1] (页面存档备份,存于互联网档案馆). "New Studies Confirm Very Old Sphinx" in Dowell, Colette M. (ed). Circular Times.
Book 36, chapter 17, in The Natural History of Pliny, translated by John Bostock and Henry Thomas Riley, Volume 6, pages 336–337 (London: H. G. Bohn, 1857).[2] (页面存档备份,存于互联网档案馆)
"Why Sequence is Important", Lehner, Mark; Hunt, Brian V. link (页面存档备份,存于互联网档案馆)