Hugo, W. B., Denyer, S. P., Hodges, N. A., & Gorman, S. P. (2004). Hugo and Russell's pharmaceutical microbiology (Seventh edition.). Blackwell Science ; Wiley India Pvt. Ltd.

Hugo, W. B., S. P. Denyer, Norman A. Hodges, and S. P. Gorman. Hugo and Russell's Pharmaceutical Microbiology. Seventh edition. Malden, Mass. : New Delhi: Blackwell Science ; Wiley India Pvt. Ltd, 2004.

Hugo, W. B., et al. Hugo and Russell's Pharmaceutical Microbiology. Seventh edition. Blackwell Science ; Wiley India Pvt. Ltd, 2004.