APA (7th ed.) Citation

Roy, K. P. (1965). An introduction to heat engines / by K.P. Roy. Asia Publishing House.

Chicago Style (17th ed.) Citation

Roy, K. P. An Introduction to Heat Engines / by K.P. Roy. Asia Publishing House, 1965.

MLA (9th ed.) Citation

Roy, K. P. An Introduction to Heat Engines / by K.P. Roy. Asia Publishing House, 1965.

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