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
as quoted by CODATA Key Vals	as quoted by CODATA Key Vals
Stavaley 1971	L. A. K. Stavaley, private communication to C. E. Vanderzee (1971) Note: apud Vanderzee 1972 and CODATA Key Vals