Encyclopedia Article (online, from a reliable reference work with substantial, authored articles)
- McFarland, Ian A. "Justification." In Encyclopedia of Religion, edited by Lindsay Jones. 2nd ed. Vol. 7, 5039-5042. Detroit: Macmillian Reference USA, 2005. Accessed August 8, 2014. Gale Virtual Reference Library.
- Levin, Saul. "The More Savory Offering: A Key to the Problem of Gen 4:3-5." Journal of Biblical Literature 98, no. 1 (1979): 85.