^Major textbooks on inorganic chemistry decline to define inorganic compounds: Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Francisco, 2001. ISBN0-12-352651-5; Greenwood, Norman N.; Earnshaw, Alan., Chemistry of the Elements 2nd, Oxford: Butterworth-Heinemann, 1997, ISBN 0080379419, Cotton, F. Albert; Wilkinson, Geoffrey, Advanced Inorganic Chemistry 5th, New York: Wiley-Interscience, 1988, ISBN 0-471-84997-9
^J. J. Berzelius "Lehrbuch der Chemie," 1st ed., Arnoldischen Buchhandlung, Dresden and Leipzig, 1827. ISBN1-148-99953-1. Brief English commentary in English can be found in Bent Soren Jorgensen "More on Berzelius and the vital force" J. Chem. Educ., 1965, vol. 42, p 394. doi:10.1021/ed042p394
^Dan Berger, Bluffton College, analysis of varying inappropriate definitions of the inorganic-organic distinction: Otherwise consistent linked material differing from current article in downplaying the carbon present vs carbon absent distinctive: [1]
^Newman, D. K.; Banfield, J. F. Geomicrobiology: How Molecular-Scale Interactions Underpin Biogeochemical Systems. Science. 2002, 296 (5570): 1071–1077. PMID 12004119. doi:10.1126/science.1010716.