Cita APA (7a ed.)

Clotfelter, B. E. (1976). The universe and its structure. McGraw-Hill.

Cita Chicago Style (17a ed.)

Clotfelter, Beryl E.. The Universe and Its Structure. New York: McGraw-Hill, 1976.

Cita MLA (9a ed.)

Clotfelter, Beryl E.. The Universe and Its Structure. McGraw-Hill, 1976.