Cita APA (7th ed.)

Einstein, A. (1954). Relativity: The special and the general theory, a popular exposition (15a. ed.). Methuen.

Cita Chicago (17th ed.)

Einstein, Albert. Relativity: The Special and the General Theory, a Popular Exposition. 15a. ed. Londres: Methuen, 1954.

Cita MLA (9th ed.)

Einstein, Albert. Relativity: The Special and the General Theory, a Popular Exposition. 15a. ed. Methuen, 1954.