text: * Biochemistry of phenolic compounds, by J. B. Harborne, 1964, Academic Press ([https://books.google.com/books?id=_-lqAAAAMAAJ Google Books])
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  * Biochemistry of Phenolic Compounds, by Wilfred Vermerris and Ralph Nicholson, 2006, Springer ([https://books.google.com/books?id=uLzdv8fsRxYC&dq=Biochemistry+of+Phenolic+Compounds&pg=PA3 Google book])