(1999). Current Contents: Life sciences, Vol.42 (25-28). Institute for Scientific Information.
Dyfyniad Arddull ChicagoCurrent Contents: Life Sciences, Vol.42 (25-28). Philadelphia: Institute for Scientific Information, 1999.
Dyfyniad MLACurrent Contents: Life Sciences, Vol.42 (25-28). Institute for Scientific Information, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.