References
- Addis, William E. & Thomas Arnold (rev. T.B. Scannell). Catholic Dictionary. (9th ed.) London: Virtue & Co., 1925. (Provides citations for the use of πέτρος to mean "rock" in classical works)
- "Who is the Rock of Matthew 16:18?". Retrieved June 21, 2005.
- "Commentary on Matthew 16:17–19". The Catholic Evangel. Archived from the original on 2009-10-26. Retrieved June 21, 2005.
- "Section IV: Authority". Refutation of James G. McCarthy's 'The Gospel According to Rome'. Retrieved June 21, 2005.
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