APA aipamena

Davies, P. (1981). The edge of infinity: Beyond the black hole. Penguin Books.

Chicago Style aipamena

Davies, Paul. The Edge of Infinity: Beyond the Black Hole. New York: Penguin Books, 1981.

MLA aipamena

Davies, Paul. The Edge of Infinity: Beyond the Black Hole. Penguin Books, 1981.