Παραπομπή APA

Gribbin, J. (1993). In the Beginning: The birth of the living universe. Penguin Books.

Παραπομπή Chicago Style

Gribbin, John. In the Beginning: The Birth of the Living Universe. London: Penguin Books, 1993.

Παραπομπή MLA

Gribbin, John. In the Beginning: The Birth of the Living Universe. Penguin Books, 1993.