APA (7th ed.) Citation

Alexander, S., & Alexander, K. (2006). Crop circles: Signs, wonders and mysteries. Chartwell Books.

Chicago Style (17th ed.) Citation

Alexander, Steve, and Karen Alexander. Crop Circles: Signs, Wonders and Mysteries. London: Chartwell Books, 2006.

MLA (8th ed.) Citation

Alexander, Steve, and Karen Alexander. Crop Circles: Signs, Wonders and Mysteries. Chartwell Books, 2006.

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