Einstein, A. (1961). Relativity: The special and the general theory; a popular exposition ([17th ed.].). Crown Publishers.
Lua i Stíl Chicago (17ú heag.)Einstein, Albert. Relativity: The Special and the General Theory; a Popular Exposition. [17th ed.]. New York: Crown Publishers, 1961.
Lua MLA (9ú heag.)Einstein, Albert. Relativity: The Special and the General Theory; a Popular Exposition. [17th ed.]. Crown Publishers, 1961.
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