| Reference Label | Details |
|---|---|
| Vanderzee 1972 | C. E. Vanderzee and D. L. King, J. Chem. Thermodyn. 4, 675-683 (1972) The Enthalpies of Solution and Formation of Ammonia |
| Stavaley 1971 | L. A. K. Stavaley, private communication to C. E. Vanderzee (1971), quoted by Vanderzee 1972 and CODATA Key Vals |