APA
Gribbin M., Gribbin J., . (1997). Time & Space. London: A Dorling Kindersley Book.
Chicago
Gribbin Mary, Gribbin John, . 1997. Time & Space. London: A Dorling Kindersley Book.
Harvard
Gribbin M., Gribbin J., . (1997). Time & Space. London: A Dorling Kindersley Book.
MLA
Gribbin Mary, Gribbin John, . Time & Space. London: A Dorling Kindersley Book. 1997.
