If you find this website is helpful to your teaching and your research,
or useful to your middle/high school science project, you could refer
this site. Based on the guide lines described by MLA web citation style
Handbook, 7th, 2009), you can cite this website as follow:
Liu, J.P., 2011. Global River and Delta Systems
Source-to-Sink References on Google Map. URL:
http://www.meas.ncsu.edu/sealevel/s2s/ , accessed on yyyy-mm-dd
(the date of your access).