Cita APA

Hawking,, S. (1993). Hawking on the big bang and black holes (1st.). World Scientific.

Citación estilo Chicago

Hawking,, Stephen. Hawking on the Big Bang and Black Holes. 1st. Singapore: World Scientific, 1993.

Cita MLA

Hawking,, Stephen. Hawking on the Big Bang and Black Holes. 1st. World Scientific, 1993.