Slobodkin, L. B. (2003). A citizen's guide to ecology. Oxford University Press.
Dyfyniad Arddull ChicagoSlobodkin, Lawrence B. A Citizen's Guide to Ecology. New York, N.Y.: Oxford University Press, 2003.
Dyfyniad MLASlobodkin, Lawrence B. A Citizen's Guide to Ecology. Oxford University Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.