நிலத்தடிக் கல்லறை: திருத்தங்களுக்கு இடையிலான வேறுபாடு

* [[எனிட் பிளைட்டன்|Blyton, Enid]] "Five go to Smuggler's Top" Hodder and Stroughton (1945) {{ISBN |978-1-84456-678-5}}

* Éamonn Ó Carragáin, Carol L. Neuman de Vegvar ''Roma felix: formation and reflections of medieval Rome'' Ashgate (14 March 2008) {{ISBN |978-0-7546-6096-5}} p. 33 [https://books.google.com/books?id=aW-LnIpVgFQC&pg=PA33&dq=catacombs+cults&ei=KN6vStbVH4rgkwS9hbmiAw#v=onepage&q=catacombs%20cults&f=false ]

* Nicholson, Paul Thomas (2005) "The sacred animal necropolis at North Saqqara: the cults and their catacombs" In Salima Ikram (ed) ''Divine creatures: animal mummies in Ancient Egypt''. American University in Cairo Press, 2005 pp. 44–71. {{ISBN |978-977-424-858-0}}