APA (7th ed.) Citation

Clifford, T., & Mitten, L. (2009). Rourke's world of science encyclopedia: Astronomy and space. Rourke.

Chicago Style (17th ed.) Citation

Clifford, Tim, and Luana Mitten. Rourke's World of Science Encyclopedia: Astronomy and Space. Rourke, 2009.

MLA (8th ed.) Citation

Clifford, Tim, and Luana Mitten. Rourke's World of Science Encyclopedia: Astronomy and Space. Rourke, 2009.

Warning: These citations may not always be 100% accurate.