APA
BURNIE D., Barbara Taylor, Jonathan Elphick, Marek Walisiewicz, Rachel Foster dan Marcus James, Richard Walker & Theresa Greenaway. (2006). Nature Encyclopedia. London: Dorling Kindersley.
Chicago
BURNIE David, Barbara Taylor, Jonathan Elphick, Marek Walisiewicz, Rachel Foster dan Marcus James, Richard Walker and Theresa Greenaway. 2006. Nature Encyclopedia. London: Dorling Kindersley.
Harvard
BURNIE D., Barbara Taylor, Jonathan Elphick, Marek Walisiewicz, Rachel Foster dan Marcus James, Richard Walker and Theresa Greenaway. (2006). Nature Encyclopedia. London: Dorling Kindersley.
MLA
BURNIE David, Barbara Taylor, Jonathan Elphick, Marek Walisiewicz, Rachel Foster dan Marcus James, Richard Walker and Theresa Greenaway. Nature Encyclopedia. London: Dorling Kindersley. 2006.