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H&R7: Hugo & Russell's Pharmaceutical Microbiology, edited by Stephen P. Denyer, Norman A. Hodges and Sean P. Gorman (2004) 7th Edition, Blackwell Publishing, ISBN 0-632-06467-6.
H&R8: Hugo & Russell's Pharmaceutical Microbiology, edited by Stephen P. Denyer, Norman A. Hodges, Sean P. Gorman and Brendan F. Gilmore (2011) 8th Edition, Wiley-Blackwell, ISBN 9781444330632.