Cita APA (7a ed.)
Ludvigsen, M. General relativity: A geometric approach. Cambridge University.
Cita estilo Chicago (17a ed.)
Ludvigsen, Malcolm. General Relativity: A Geometric Approach. Nueva York, EUA: Cambridge University.
Cita MLA (9a ed.)
Ludvigsen, Malcolm. General Relativity: A Geometric Approach. Cambridge University.
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