Sparks, T. (2000). Statistics in ecotoxicology. John Wiley.
Dyfyniad Arddull ChicagoSparks, Tim. Statistics in Ecotoxicology. West Sussex, England: John Wiley, 2000.
Dyfyniad MLASparks, Tim. Statistics in Ecotoxicology. John Wiley, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.