* Oppelt, Norman T. " Guide to Prehistoric Ruins of the Southwest ", pp. 159 – 161.
* Oppelt, Norman T. " Guide to Prehistoric Ruins of the Southwest ".
0.004 seconds.
* Oppelt, Norman T. " Guide to Prehistoric Ruins of the Southwest ", pp. 159 – 161.
* Oppelt, Norman T. " Guide to Prehistoric Ruins of the Southwest ".
0.004 seconds.