Pritchard, James B..
Civil defense at Gibeon.
- Pennsilvania-US : Univesity of Pennsylvania, 1962.
- páginas 11-17 : ilustraciones blanco y negro
- Trimenstral
- Vol.5, no 1(1962)
- Expedition. the bulletin of the university museum of the university of pennsilvania ; no. 4 .
- University of Pennsylvania. .