APA (7th ed.) Citation

Einstein, A. (1960). relativity- the special & the general theory. Methuen.

Chicago Style (17th ed.) Citation

Einstein, Albert. Relativity- the Special & the General Theory. London: Methuen, 1960.

MLA (9th ed.) Citation

Einstein, Albert. Relativity- the Special & the General Theory. Methuen, 1960.