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Dyfyniad Arddull ChicagoWasik, S. P., and W. Tsang. "Stable Carbon Isotope Ratio Measurements With a Gas Density Meter." J Res Natl Bur Stand A Phys Chem 1968.
Dyfyniad MLAWasik, S. P., and W. Tsang. "Stable Carbon Isotope Ratio Measurements With a Gas Density Meter." J Res Natl Bur Stand A Phys Chem 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.