i http://www.palomar.edu/oceanography/salty_ocean.htm; Herbert Swenson, "Why is the Ocean Salty?", U.S. Geological Survey Publication.
ii http://www.palomar.edu/oceanography/salty_ocean.htm; Herbert Swenson, "Why is the Ocean Salty?", U.S. Geological Survey US Publication.
iii Sally Morgan, Pauline Lalor, Ocean Life, PRC Publishing, 2001, London, s. 9.
iv http://en.wikipedia.org/wiki/Seawater
v Sally Morgan, Pauline Lalor, Ocean Life, PRC Publishing, 2001, London, s. 9.
vi http://www.palomar.edu/oceanography/salty_ocean.htm; Herbert Swenson, "Why is the Ocean Salty?", U.S. Geological Survey US Publication.