Cita APA (7a ed.)

Ligthman, A. P. (1975). Problem book in relativity and gravitation. Princeton University Press.

Cita Chicago Style (17a ed.)

Ligthman, Alan P. Problem Book in Relativity and Gravitation. New Jersey: Princeton University Press, 1975.

Cita MLA (8a ed.)

Ligthman, Alan P. Problem Book in Relativity and Gravitation. Princeton University Press, 1975.