APA
Naber G., . (1988). Spacetime and singularities: an introducion. Cambridge: Cambridge University Press.
Chicago
Naber Gregory, . 1988. Spacetime and singularities: an introducion. Cambridge: Cambridge University Press.
Harvard
Naber G., . (1988). Spacetime and singularities: an introducion. Cambridge: Cambridge University Press.
MLA
Naber Gregory, . Spacetime and singularities: an introducion. Cambridge: Cambridge University Press. 1988.