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- Toboldt, William K., Larry Johnson, W. Scott Gautier. "Goodheart-Willcox Automotive Encyclopedia. Goodheart-WilCox Company, 2006. Tinley Park, Illinois.
- Vizard, David. "Compression Ratio Tech - The Power Squeeze." Popular Hot Rodding Magazine. February 2009. (Dec. 16, 2011) http://www.popularhotrodding.com/tech/0311_phr_compression_ratio_tech/index.html