1. Valcárcel M (2000) Principles of Analytical Chemistry. Springer-Verlag, Berlin
2. Kellner R, Mermet JM, Otto M, Valcárcel M, Widmer HM (2004) Analytical Chemistry, 2nd edn. Wiley-VCH, Weinheim
3. Valcárcel M (2012) In: Krull S (ed) Analytical Chemistry, InTech Open Access Pu., Croatia
4. The Shorter Oxford English Dictionary (1991) 3rd ed. Oxford University Press: Oxford, UK
5. Webster's Third New International Dictionary of the English Language (1981) Encyclopaedia Britannica, Inc.: Chicago, IL