- http://mesohydroxero.weebly.com/bibliography.html
- http://plantwaterbalance.blogspot.co.nz/2013/06/hydrophytes-adaptations.html
- http://www.biologydiscussion.com/plants/morphological-and-physiological-adaptations-of-hydrophytes/4583
- http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel/classification_inheritance/variationrev1.shtml
- http://www.bbc.co.uk/bitesize/higher/biology/genetics_adaptation/maintaining_water_balance/revision/4/
- http://waterbalanceinplants.blogspot.co.nz/2013/06/many-plants-adaptations-are-designed-to.html
- http://passel.unl.edu/pages/informationmodule.php?idinformationmodule=1092853841&topicorder=6
- Mr Nin (In Person)
- Miss Ginders (In Person)
- Miss Ritchie (In Person)
- Esa Study Guide Level 2 Biology (Roberts 2011)
- http://www.thestudentroom.co.uk/wiki/Revision:Xerophytes_and_hydrophytes