Dyfyniad APA

Hawking, S. (1994). Black Holes And Baby Universes And Other Essays. Bantam Books.

Dyfyniad Arddull Chicago

Hawking, Stephen. Black Holes And Baby Universes And Other Essays. London: Bantam Books, 1994.

Dyfyniad MLA

Hawking, Stephen. Black Holes And Baby Universes And Other Essays. Bantam Books, 1994.

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