Vitruvius (1914). The Ten Books of Architecture(PDF). Translated by Morgan, Morris Hickey. Harvard University Press. p. 6.3. Archived(PDF) from the original on 2022-10-09. Retrieved 13 May 2018.
Sunfrost rates 15 cu ft (420 L). refrigerators at 0.27 kWh/day (2007-12-27), while Dometic brand (formerly Servel brand) gas refrigerators cool only 8 cubic feet (0.23 m3) for 325 W continuous (i.e. 7.8 kWh/day) ALternatively, they use about 8 US gallons (30 L; 6.7 imp gal) of LP gas per month, which in most places is more expensive than the equivalent electricity.(2007-12-27)
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Vitruvius (1914). The Ten Books of Architecture(PDF). Translated by Morgan, Morris Hickey. Harvard University Press. p. 6.3. Archived(PDF) from the original on 2022-10-09. Retrieved 13 May 2018.
