I think that water with salt will evaporate slower than the pure water without salt.

A bibliography is a list of your research references citing the source of the information that substantiates your findings.

Like this...

http://www.actiondonation.org/articles/effect-of-salt.html
http://www.newton.dep.anl.gov/askasci/gen06/gen06351.htm
http://www.sciencebuddies.org/science-fairprojects/phpBB3/viewtopic.php?f=36&t=6314
http://van.physics.illinois.edu/qa/listing.php?id=1447
http://van.physics.illinois.edu/qa/listing.php?id=1461