U. S. Bureau of Mines. (1965). Mercury potential of the Unites States. U. S. Govt. Print. Off.
Cita Chicago (17th ed.)U. S. Bureau of Mines. Mercury Potential of the Unites States. Washington: U. S. Govt. Print. Off, 1965.
Cita MLA (9th ed.)U. S. Bureau of Mines. Mercury Potential of the Unites States. U. S. Govt. Print. Off, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.