Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

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