Cita APA (7th ed.)

Goldsmith, D., & Levy, D. (1974). From the black hole to the infinite universe. Holden-Day.

Cita Chicago (17th ed.)

Goldsmith, Donald, i Donald Levy. From the Black Hole to the Infinite Universe. San Francisco: Holden-Day, 1974.

Cita MLA (9th ed.)

Goldsmith, Donald, i Donald Levy. From the Black Hole to the Infinite Universe. Holden-Day, 1974.