Frankel, T. (1979). Gravitational curvature: An introduction to Einstein's theory. W.H. Freeman and Company.
Chicago Edition CitationFrankel, Theodore. Gravitational Curvature: An Introduction to Einstein's Theory. San francisco: W.H. Freeman and Company, 1979.
Cita MLAFrankel, Theodore. Gravitational Curvature: An Introduction to Einstein's Theory. W.H. Freeman and Company, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.