APA (7th ed.) Zitazioa

Narlikar, J. V. (1999). Seven wonders of the cosmos. Cambridge University Press.

Chicago Style (17th ed.) Zitazioa

Narlikar, Jayant V. Seven Wonders of the Cosmos. Cambridge ; New York: Cambridge University Press, 1999.

MLA (9th ed.) Zitazioa

Narlikar, Jayant V. Seven Wonders of the Cosmos. Cambridge University Press, 1999.