^Kunzel, Bonnie (2004). "An Invitation to the Writing Game: Monica Hughes (1925–2003)". The ALAN Review. 31 (2). doi:10.21061/alan.v31i2.a.10. ISSN 0882-2840.
CRISIS ON CONSHELF TEN by Monica Hughes. Retrieved 2015-05-06. {{cite book}}: |work= ignored (help)
"From One Problem Colony to Another: Crisis on Conshelf Ten". Tor.com. 8 January 2015. Retrieved 2015-05-06.
Barbour, Douglas (2003). Robert Runté (ed.). Crisis on Conshelf Ten and Earthdark. Archived from the original on 2004-09-17. {{cite book}}: |work= ignored (help)