Παραπομπή APA

Begelman, M. (2010). Gravity's fatal attraction: Black holes in the universe (2nd ed.). Cambridge university.

Παραπομπή Chicago Style

Begelman, Mitchell. Gravity's Fatal Attraction: Black Holes in the Universe. 2nd ed. Cambridge: Cambridge university, 2010.

Παραπομπή MLA

Begelman, Mitchell. Gravity's Fatal Attraction: Black Holes in the Universe. 2nd ed. Cambridge university, 2010.