(1987). Three hundred years of gravitation. 0. U. P.
Cita Chicago (17th ed.)Three Hundred Years of Gravitation. Cambridge: 0. U. P, 1987.
Cita MLA (9th ed.)Three Hundred Years of Gravitation. 0. U. P, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.