Blyton, F., Chuter, V., Walter, K. E. L., & Burns, J. (2012, January 18). Non-drug therapies for lower limb muscle cramps. Cochrane Database of Systematic Reviews, 1. Retrieved from http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD008496.pub2/full.
Doghramji, K. (2014, October). Parasomnias. Retrieved from http://www.merckmanuals.com/professional/neurologic-disorders/sleep-and-wakefulness-disorders/parasomnias.
Garrison, S. R., Allan, G. M., Sekhon, R. K., Musini, V. M., & Khan, K. M. (2012, September 12). Magnesium for skeletal muscle cramps. Cochrane Database of Systematic Reviews, 9. Retrieved from http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD009402.pub2/full.
Leg cramps. (2012, September). Retrieved from http://cks.nice.org.uk/leg-cramps#!topicsummary.