- ^ "About the Author". O'Brien, Robert C. Z for Zachariah [1974]. New York: Simon Pulse. 2007.
- ^ O'Brien, Sally M. [Sally M. Conly]. "About Robert C. O'Brien". The Horn Book Magazine (August 1972): 349–51. Reprinted by Boris Masis (borism.net) as "About Robert C. O'Brien by Sally M. O'Brien" in "Robert C. O'Brien", The Z for Zachariah Nuclear Comparison Page (borism.net/zforz), 1997.
- ^ "Janeaddamspeace.org" (PDF). Archived from the original (PDF) on 9 April 2016. Retrieved 9 November 2015.
- ^ Cullinan, Bernice E. and Diane Goetz. The Continuum Encyclopedia of Children's Literature, New York: The Continuum International Publishing Group, 2005. p. 598. ISBN 0826415164
- ^ O'Brien, p. 152.
- ^ O'Brien, p. 189.
- ^ O'Brien, p. 190.
- ^ O'Brien, p. 192, 195.
- ^ O'Brien, p. 29.
- ^ O'Brien, p. 10.
- ^ O'Brien, p. 40.
- ^ O'Brien, p. 56.
- ^ Ackroyd, Peter. The Spectator (April 12, 1975), Masis, Boris. "Z for Zachariah Reviews". The Z for Zachariah Nuclear Comparison Page. 1997.
- ^ The Junior Bookshelf v.39 (June 1975), Masis, Boris. "Z for Zachariah Reviews". The Z for Zachariah Nuclear Comparison Page. 1997.
- ^ Times Literary Supplement (April 4, 1975), Masis, Boris. "Z for Zachariah Reviews". The Z for Zachariah Nuclear Comparison Page. 1997.
- ^ Hsx.com
- ^ Empireonline.com
- ^ Smh.com.au
- ^ Stuff.co.nz
- ^ Internet Movie Database
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