Fletcher , E. (1907). Practical instructions in quantitative assaying with the blowpipe. John Wiley.
Dyfyniad Arddull ChicagoFletcher , E.L. Practical Instructions in Quantitative Assaying with the Blowpipe. New York: John Wiley, 1907.
Dyfyniad MLAFletcher , E.L. Practical Instructions in Quantitative Assaying with the Blowpipe. John Wiley, 1907.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.