| Reference Label | Details |
|---|---|
| CODATA Key Vals | J. D. Cox, D. D. Wagman, and V. A. Medvedev, "CODATA Key Values for Thermodynamics", Hemisphere: New York 1989 |
| Mansson 1963 | M. Månsson and S. Sunner, Acta Chem. Scand. 17, 723-727 (1963) The Heat of Formation of Sulphuric Acid |