Cita APA (7th ed.)

Kolb, E. W., & Turner, M. S. (1990). The early universe. Addison-Wesley.

Cita Chicago (17th ed.)

Kolb, Edward W., i Michael S. Turner. The Early Universe. Reading: Addison-Wesley, 1990.

Cita MLA (9th ed.)

Kolb, Edward W., i Michael S. Turner. The Early Universe. Addison-Wesley, 1990.