Sparn, B. (2021). ENERGY STAR residential water heater specification and test method for connected residential water heaters. National Renewable Energy Laboratory.
Chicago Style (17th ed.) CitationSparn, Bethany. ENERGY STAR Residential Water Heater Specification and Test Method for Connected Residential Water Heaters. [Golden, Colo.]: National Renewable Energy Laboratory, 2021.
MLA (9th ed.) CitationSparn, Bethany. ENERGY STAR Residential Water Heater Specification and Test Method for Connected Residential Water Heaters. National Renewable Energy Laboratory, 2021.
Warning: These citations may not always be 100% accurate.