Lewis, Gilbert Newton (1923). Valence and the Structure of Atoms and Molecules. American chemical society. Monograph series. New York, New York, U.S.A.: Chemical Catalog Company. p. 142. ISBN9780598985408. From p. 142: "We are inclined to think of substances as possessing acid or basic properties, without having a particular solvent in mind. It seems to me that with complete generality we may say that a basic substance is one which has a lone pair of electrons which may be used to complete the stable group of another atom, and that an acid substance is one which can employ a lone pair from another molecule in completing the stable group of one of its own atoms. In other words, the basic substance furnishes a pair of electrons for a chemical bond, the acid substance accepts such a pair."
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Cramer, Roger E.; Bopp, Thomas T. (1977). "Great e and C plot. Graphical display of the enthalpies of adduct formation for Lewis acids and bases". Journal of Chemical Education. 54 (10): 612. Bibcode:1977JChEd..54..612C. doi:10.1021/ed054p612.
Brown, Herbert C.; Kanner, Bernard (1966). "Preparation and Reactions of 2,6-Di-t-butylpyridine and Related Hindered Bases. A Case of Steric Hindrance toward the Proton". Journal of the American Chemical Society. 88 (5): 986–992. doi:10.1021/ja00957a023.
Cramer, Roger E.; Bopp, Thomas T. (1977). "Great e and C plot. Graphical display of the enthalpies of adduct formation for Lewis acids and bases". Journal of Chemical Education. 54 (10): 612. Bibcode:1977JChEd..54..612C. doi:10.1021/ed054p612.
Rowsell, Bryan D.; Gillespie, Ronald J.; Heard, George L. (1999). "Ligand Close-Packing and the Lewis Acidity of BF3 and BCl3". Inorganic Chemistry. 38 (21): 4659–4662. doi:10.1021/ic990713m. PMID11671188.
Anslyn, Eric V. (2006). Modern physical organic chemistry. Dougherty, Dennis A., 1952-. Sausalito, CA: University Science. ISBN1891389319. OCLC55600610.[page needed]
Vollhardt, K. Peter C. (2018). Organic chemistry : structure and function. Neil Eric Schore (8th ed.). New York. p. 73. ISBN978-1-319-07945-1. OCLC1007924903.{{cite book}}: CS1 maint: location missing publisher (link)
