एपीए उद्धरण

Novikov, I. D. (1990). Black holes and the universe. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Novikov, I. D. Black Holes and the Universe. Cambridge [England]: Cambridge University Press, 1990.

एमएलए उद्धरण

Novikov, I. D. Black Holes and the Universe. Cambridge University Press, 1990.