- O'Brien, Robert C. . Z for Zachariah. New York: Simon & Schuster, 1974.
- Simon and Schuster. "Robert C. O'Brien." Simon and Schuster. April 10, 2017. <http://www.simonandschuster.com/authors/Robert-C-OBrien/1246204>.
- "The Authors and Illustrators - Profiles: Robert C O'Brien." Through The Looking Glass Children’s Book Reviews. April 11, 2017. <http://lookingglassreview.com/html/robert_c_o_brien.html>.
- Dan Shade. "Z for Zachariah." SF Site Reviews. 2010. April 14, 2017. <https://www.sfsite.com/11a/za331.htm>.
- Jenny Downham. "Z for Zachariah: a complex exploration of power and gender." The Guardian. June 20, 2016. April 14, 2017. <https://www.theguardian.com/childrens-books-site/2016/jun/20/robert-c-obrien-z-for-zachariah-feminism-jenny-downham>.
- Libby Butler. "Z for Zachariah Study Guide." Z for Zachariah Study Guide. April 10, 2017. <http://z-for-zachariahstudyguide.weebly.com/>.
Z For Zachariah
