APA
Farndon J., Dunning M., . (1992). How the earth works. London: Dorling Kindersley.
Chicago
Farndon John, Dunning Mike, . 1992. How the earth works. London: Dorling Kindersley.
Harvard
Farndon J., Dunning M., . (1992). How the earth works. London: Dorling Kindersley.
MLA
Farndon John, Dunning Mike, . How the earth works. London: Dorling Kindersley. 1992.