CDC – Centers for Disease Control and Prevention (U.S.) – sito governativo statunitense
https://stacks.cdc.gov/view/cdc/6023
CNN del 16 maggio 2014
https://edition.cnn.com/2014/05/16/politics/pentagon-zombie-apocalypse/index.html
CONOP 8888 (wikipedia)
https://en.m.wikipedia.org/wiki/CONOP_8888
WIRED (sito)
https://www.wired.it/attualita/tech/2014/05/15/piano-esercito-epidemia-zombie/