APA (7th ed.) Citation

Gamalath, K. W. (2009). Introduction to theories of Albert Einstein.

Chicago Style (17th ed.) Citation

Gamalath, K.A.I.L. Wijewardena. Introduction to Theories of Albert Einstein. 2009.

MLA (9th ed.) Citation

Gamalath, K.A.I.L. Wijewardena. Introduction to Theories of Albert Einstein. 2009.

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