Cita APA (7th ed.)

KAUFMANN, W. J. (1973). Relativity and cosmology. Harper and Row Pub.

Cita Chicago (17th ed.)

KAUFMANN, Williuam J. Relativity and Cosmology. New York: Harper and Row Pub, 1973.

Cita MLA (9th ed.)

KAUFMANN, Williuam J. Relativity and Cosmology. Harper and Row Pub, 1973.