Chamberlain, J., 2015. Analysis of Drugs in Biological Fluids 3rd Edition. CRC Press.
Convention, T.U.S.P., 2015. USP 39. 2nd ed. Twinbrooks Parkway.
Denyer, S.P., Baird, R.M. & Hodges, N.A., 2010. Handbook of Microbiological Quaity Control. Taylor & Francis Routledge.