APA Style

Gower, Jeremy, Milne, Annabel, Pyke, Jeremy. (1991). The Planet Earth (Cet.2, 1991). London: World Book International.

Chicago Style

Gower, Jeremy, Milne, Annabel, Pyke, Jeremy. The Planet Earth. Cet.2, 1991 London: World Book International, 1991. Text.

MLA Style

Gower, Jeremy, Milne, Annabel, Pyke, Jeremy. The Planet Earth. Cet.2, 1991 London: World Book International, 1991. Text.

Turabian Style

Gower, Jeremy, Milne, Annabel, Pyke, Jeremy. The Planet Earth. Cet.2, 1991 London: World Book International, 1991. Print.