APA ציטוט

Hawking, S. (1993). Black holes and baby universes and other essays. Bantam Books.

Chicago Edition Citation

Hawking, Stephen. Black Holes and Baby Universes and Other Essays. New York, N.Y.: Bantam Books, 1993.

ציטוט MLA

Hawking, Stephen. Black Holes and Baby Universes and Other Essays. Bantam Books, 1993.