Cita APA (7a ed.)

Kaufmann, W. J. (1977). Relativity and cosmology (2nd ed.). Harper & Row.

Cita Chicago Style (17a ed.)

Kaufmann, William J. Relativity and Cosmology. 2nd ed. Nwe York.: Harper & Row, 1977.

Cita MLA (8a ed.)

Kaufmann, William J. Relativity and Cosmology. 2nd ed. Harper & Row, 1977.