Dyfyniad APA

Gribbin, J. (1998). In search of the big bang: The life and death of the universe. Penguin.

Dyfyniad Arddull Chicago

Gribbin, John. In Search of the Big Bang: The Life and Death of the Universe. England: Penguin, 1998.

Dyfyniad MLA

Gribbin, John. In Search of the Big Bang: The Life and Death of the Universe. Penguin, 1998.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.