Cita APA (7a ed.)

Kolb, E. W., & Turner, M. S. (1990). The Early Universe. Addison-Wesley Publishing Company.

Cita Chicago Style (17a ed.)

Kolb, Edward W., y Michael S. Turner. The Early Universe. California: Addison-Wesley Publishing Company, 1990.

Cita MLA (9a ed.)

Kolb, Edward W., y Michael S. Turner. The Early Universe. Addison-Wesley Publishing Company, 1990.