Dyfyniad APA

Hopkin, S., Sibly, R., & Walker, C. (1996). Principles of ecotoxicology. London: Taylor and Francis.

Dyfyniad Arddull Chicago

Hopkin, S.P., R.M Sibly, và C.H Walker. Principles of Ecotoxicology. London: Taylor and Francis, 1996.

Dyfyniad MLA

Hopkin, S.P., R.M Sibly, và C.H Walker. Principles of Ecotoxicology. London: Taylor and Francis, 1996.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.