APA (7th ed.) Citation

Surzhyk, T. V. (2012). Some principles to increase ef?ciency ratio of heat pumps performance.

Chicago Style (17th ed.) Citation

Surzhyk, T. V. Some Principles to Increase Ef?ciency Ratio of Heat Pumps Performance. 2012.

MLA (8th ed.) Citation

Surzhyk, T. V. Some Principles to Increase Ef?ciency Ratio of Heat Pumps Performance. 2012.

Warning: These citations may not always be 100% accurate.