Reference Label	Details
est unc	estimated uncertainty
Hildenbrand 1953	D. L. Hildenbrand and W. F. Giauque, J. Am. Chem. Soc. 75, 2811-2818 (1953) Ammonium Oxide and Ammonium Hydroxide. Heat Capacities and Thermodynamic Properties from 15 to 300 °K