Bartmess, J. E.; Scott, J. A.; McIver, R. T. (1979). «Scale of acidities in the gas phase from methanol to phenol». J. Am. Chem. Soc.101 (20): 6046. doi:10.1021/ja00514a030.
Meister, Erich C.; Willeke, Martin; Angst, Werner; Togni, Antonio; Walde, Peter (2014). «Confusing Quantitative Descriptions of Brønsted-Lowry Acid-Base Equilibria in Chemistry Textbooks – A Critical Review and Clarifications for Chemical Educators». Helvetica Chimica Acta(en inglés)97 (1): 1-31. ISSN1522-2675. doi:10.1002/hlca.201300321.
Silverstein, Todd P.; Heller, Stephen T. (13 de junio de 2017). «pKa Values in the Undergraduate Curriculum: What Is the Real pKa of Water?». Journal of Chemical Education94 (6): 690-695. ISSN0021-9584. doi:10.1021/acs.jchemed.6b00623.
Meister, Erich C.; Willeke, Martin; Angst, Werner; Togni, Antonio; Walde, Peter (2014). «Confusing Quantitative Descriptions of Brønsted-Lowry Acid-Base Equilibria in Chemistry Textbooks – A Critical Review and Clarifications for Chemical Educators». Helvetica Chimica Acta(en inglés)97 (1): 1-31. ISSN1522-2675. doi:10.1002/hlca.201300321.
Silverstein, Todd P.; Heller, Stephen T. (13 de junio de 2017). «pKa Values in the Undergraduate Curriculum: What Is the Real pKa of Water?». Journal of Chemical Education94 (6): 690-695. ISSN0021-9584. doi:10.1021/acs.jchemed.6b00623.