Koch, H. J. (1957). Trace analysis: Papers presented at a symposium on trace analysis held at the New York Academy of Medicine, New York, N.Y., November 2, 3, 4, 1955. John Wiley and Sons.
Dyfyniad Arddull ChicagoKoch, Henry J. Trace Analysis: Papers Presented at a Symposium on Trace Analysis Held at the New York Academy of Medicine, New York, N.Y., November 2, 3, 4, 1955. New York: John Wiley and Sons, 1957.
Dyfyniad MLAKoch, Henry J. Trace Analysis: Papers Presented at a Symposium on Trace Analysis Held at the New York Academy of Medicine, New York, N.Y., November 2, 3, 4, 1955. John Wiley and Sons, 1957.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.