• Martinez, Vicent (1999). botanical-online. Retrieved March 22, 2007, from botanical-online Web site: http://www.botanical-online.com
• Olive tree picture from Flickr (creative commons license http://creativecommons.org/licenses/by-nc-nd/2.0/), http://www.flickr.com/photos/75166820@N00/70069520/
• Dragonera picture from Flickr ( creative commons license)http://creativecommons.org/licenses/by-nc-nd/2.0/
• http://creativecommons.org/licenses/by-nc-nd/2.0/
• Education Department of the Botanical Garden in Sóller (they allowed us to take picture).
• Catalina Morey, our Science teacher.
• Antònia Vidal, our Technology teacher and Catherine Cobb, our English teacher.