APA
Gribbin J., . (2000). The birth of time. Hyderabad: University press.
Chicago
Gribbin John, . 2000. The birth of time. Hyderabad: University press.
Harvard
Gribbin J., . (2000). The birth of time. Hyderabad: University press.
MLA
Gribbin John, . The birth of time. Hyderabad: University press. 2000.
