Thorne, K. S. (1994). Black holes and time warps.
Chicago Style aipamenaThorne, Kip S. Black Holes and Time Warps. Papermac, London, 1994.
MLA aipamenaThorne, Kip S. Black Holes and Time Warps. 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.