Παραπομπή APA

Novikov, I., & Vitaly, K. (1995). Black holes and the Universe. Cambridge University Press.

Παραπομπή Chicago Style

Novikov, Igor, και Kisin Vitaly. Black Holes and the Universe. Cambridge: Cambridge University Press, 1995.

Παραπομπή MLA

Novikov, Igor, και Kisin Vitaly. Black Holes and the Universe. Cambridge University Press, 1995.