Cita APA (7th ed.)
Schutz, B. F. A first course in general relativity. Cambridge University.
Cita Chicago (17th ed.)
Schutz, Bernard F. A First Course in General Relativity. Cambridge, Inglaterra: Cambridge University.
Cita MLA (9th ed.)
Schutz, Bernard F. A First Course in General Relativity. Cambridge University.
Atenció: Aquestes cites poden no estar 100% correctes.